:root{
  --background:#fbfcfd;
  --foreground:#232a33;
  --card:#ffffff;
  --primary:#003d71;
  --primary-foreground:#fcfcfc;
  --secondary:#e8edf4;
  --secondary-foreground:#003d71;
  --muted:#f0f3f7;
  --muted-foreground:#323b44;
  --accent:#c9752f;
  --accent-foreground:#ffffff;
  --border:#dbe1e9;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{font-family:'Roboto',-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;-webkit-font-smoothing:antialiased;scroll-behavior:smooth;}
body{background:var(--background);color:var(--foreground);line-height:1.6;}
a{text-decoration:none;color:inherit;}
img{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
ul{list-style:none;}
.container{max-width:1280px;margin:0 auto;padding:0 1rem;width:100%;}
.icon{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:50;background:#fafcff;backdrop-filter:blur(6px);border-bottom:1px solid var(--border);}
.header-cta .btn{padding:.5rem 1.25rem;min-width:9.5rem;}
.header-cta .btn-accent{background:#ce5914;}
.header-cta .btn-accent:hover{background:#013d71;color:#fff;}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{display:flex;align-items:center;gap:.75rem;}
.logo-mark{width:40px;height:40px;background:var(--primary);border-radius:.5rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.logo-mark span{color:var(--primary-foreground);font-weight:700;font-size:1.125rem;}
.logo-name{font-weight:700;font-size:1.125rem;color:var(--foreground);line-height:1.2;}
.logo-sub{font-size:.75rem;color:var(--muted-foreground);}
.logo-img{height:40px;width:auto;display:block;}
.nav-desktop{display:none;align-items:center;gap:.25rem;}
.nav-item{position:relative;}
.nav-link{display:flex;align-items:center;gap:.25rem;padding:.5rem 1rem;font-size:1rem;font-weight:500;color:var(--foreground);transition:color .2s;}
.nav-link:hover{color:var(--primary);}
.nav-link .icon{width:16px;height:16px;}
.dropdown{position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--border);border-radius:0;box-shadow:0 10px 25px rgba(0,0,0,.1);padding:.5rem 0;min-width:12rem;display:none;}
.nav-item:hover .dropdown{display:block;}
.dropdown a{display:block;padding:.5rem 1rem;font-size:.875rem;color:var(--foreground);transition:background .2s,color .2s;}
.dropdown a:hover{background:var(--secondary);color:var(--primary);}
.header-cta{display:none;align-items:center;gap:.75rem;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:700;transition:background .2s,color .2s,border-color .2s;white-space:nowrap;}
.btn-outline{border:1px solid var(--border);background:#fff;color:var(--foreground);font-weight:700;padding:.75rem 1.5rem;font-size:1rem;}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn-outline .icon{width:16px;height:16px;}
.btn-accent{background:var(--accent);color:var(--accent-foreground);padding:.75rem 1.75rem;font-size:1rem;}
.btn-accent:hover{background:#b3661f;}
.menu-toggle{display:inline-flex;padding:.5rem;color:var(--foreground);}
.nav-mobile{display:none;background:#fff;border-top:1px solid var(--border);}
.nav-mobile.open{display:block;}
.nav-mobile nav{padding:1rem;display:flex;flex-direction:column;gap:.5rem;}
.nav-mobile nav>div:not(.nav-mobile-cta){border-bottom:1px solid var(--border);padding-bottom:.5rem;}
.nav-mobile nav>div:not(.nav-mobile-cta)>a{display:block;padding:.5rem 0;font-weight:700;color:var(--primary);}
.nav-mobile nav>div:not(.nav-mobile-cta)>a:hover{color:var(--accent);}
.nav-mobile>nav>div>a{display:block;padding:.75rem 1rem;font-weight:500;border-radius:0;transition:background .2s;}
.nav-mobile>nav>div>a:hover{background:var(--secondary);}
.nav-mobile-children{margin-left:1rem;margin-top:.25rem;display:flex;flex-direction:column;gap:.25rem;}
.nav-mobile-children a{display:block;padding:.5rem 1rem;font-size:.875rem;color:var(--muted-foreground);}
.nav-mobile-children a:hover{color:var(--primary);}
.nav-mobile-cta{padding-top:1rem;display:flex;flex-direction:column;gap:.5rem;}
.nav-mobile-cta .btn{width:100%;padding-top:.75rem;padding-bottom:.75rem;justify-content:center;text-align:center;}
.nav-mobile-cta .btn-accent{background:#ce5914;}
.nav-mobile-cta .btn{font-weight:700;}

/* ===== Section common ===== */
.section{padding:5rem 0;}
.section-bg{background:var(--background);}
.section-secondary{background:#dff1ff;}
.section-news{background:#edf6ff;}
.eyebrow{font-size:1rem;font-weight:500;color:#ce5914;letter-spacing:.1em;margin-bottom:.5rem;}
.section-title{font-size:1.5rem;font-weight:700;color:var(--foreground);margin-bottom:1rem;}
.section-lead{color:var(--muted-foreground);line-height:1.7;font-size:1.125rem;}
.text-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--primary);font-weight:700;}
.text-link:hover{text-decoration:underline;}
.text-link .icon{width:16px;height:16px;}
.center{text-align:center;}
.mt-12{margin-top:3rem;}

/* ===== Footer ===== */
.footer{background:var(--foreground);color:var(--background);}
.footer-main{padding:3rem 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;}
.footer-brand{display:flex;align-items:center;gap:.75rem;margin-bottom:1.5rem;}
.footer-mark{width:48px;height:48px;background:var(--primary);border-radius:.5rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.footer-mark span{color:var(--primary-foreground);font-weight:700;font-size:1.25rem;}
.footer-brand p:first-child{font-weight:700;font-size:1.125rem;}
.footer-brand .sub{font-size:.875rem;color:rgba(251,252,253,.7);}
.footer-logo-img{height:40px;width:auto;display:block;}
.footer-info{display:flex;flex-direction:column;gap:.75rem;font-size:.875rem;color:rgba(251,252,253,.8);}
.footer-info p{display:flex;align-items:flex-start;gap:.5rem;}
.footer-info .icon{width:16px;height:16px;margin-top:.15rem;}
.footer h4{font-weight:700;font-size:.875rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem;}
.footer-links{display:flex;flex-direction:column;gap:.5rem;}
.footer-links a{font-size:.875rem;color:rgba(251,252,253,.7);transition:color .2s;}
.footer-links a:hover{color:var(--background);}
.footer-bottom{border-top:1px solid rgba(251,252,253,.1);}
.footer-bottom .container{padding-top:1.5rem;padding-bottom:1.5rem;display:flex;flex-direction:column;align-items:center;gap:1rem;}
.footer-copy{font-size:.875rem;color:rgba(251,252,253,.6);}
.footer-legal{display:flex;gap:1.5rem;font-size:.875rem;}
.footer-legal a{color:rgba(251,252,253,.6);transition:color .2s;}
.footer-legal a:hover{color:var(--background);}

/* ===== Responsive (common: header / footer / section utilities) ===== */
@media(min-width:640px){
  .footer-bottom .container{flex-direction:row;justify-content:space-between;}
}
@media(min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media(min-width:1024px){
  .header-inner{height:80px;}
  .logo-mark{width:48px;height:48px;}
  .logo-mark span{font-size:1.25rem;}
  .logo-name{font-size:1.25rem;}
  .logo-img{height:48px;}
  .nav-desktop{display:flex;}
  .header-cta{display:flex;}
  .menu-toggle{display:none;}
  .nav-mobile{display:none!important;}
  .section{padding:7rem 0;}
  .section-title{font-size:1.875rem;}
  .footer-grid{grid-template-columns:repeat(6,1fr);}
  .footer-brand-col{grid-column:span 2;}
}

/* ===== Back to top (common widget) ===== */
.back-to-top{position:fixed;right:1.25rem;bottom:1.25rem;width:44px;height:44px;border-radius:9999px;background:var(--primary);color:var(--primary-foreground);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(0,0,0,.2);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s,transform .25s,visibility .25s;z-index:40;}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{background:#025a9e;}
.back-to-top .icon{width:20px;height:20px;}
@media(min-width:1024px){
  .back-to-top{right:2rem;bottom:2rem;width:48px;height:48px;}
}