:root{
  --navy:#123f70;
  --navy-deep:#0b3158;
  --blue:#0a67be;
  --blue-2:#2087d1;
  --pale:#eaf5fd;
  --pale-2:#f5faff;
  --line:#d6e5f1;
  --text:#243b53;
  --muted:#627487;
  --white:#ffffff;
  --shadow:0 12px 30px rgba(22,69,110,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Yu Gothic","Hiragino Kaku Gothic ProN","Meiryo",sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.8;
}
img{max-width:100%;display:block}
a{color:inherit}
.site-header{
  background:rgba(255,255,255,.98);
  border-bottom:1px solid #e7eef4;
  position:sticky;top:0;z-index:50;
}
.container{width:min(1180px,calc(100% - 48px));margin:auto}
.header-row{
  min-height:92px;
  display:flex;align-items:center;gap:26px;
}
.brand{
  min-width:235px;text-decoration:none;color:var(--navy);
}
.brand-main{
  display:block;font-family:serif;font-weight:700;
  font-size:31px;line-height:1.1;letter-spacing:.02em;
}
.brand-sub{
  display:block;margin-top:6px;font-size:13px;letter-spacing:.08em;
}
.header-copy{
  border-left:1px solid #ccd9e5;
  padding-left:25px;
  color:var(--navy-deep);
  font-family:serif;
  font-size:16px;
  line-height:1.5;
  min-width:245px;
}
.nav{margin-left:auto;display:flex;align-items:center;gap:4px}
.nav a{
  text-decoration:none;
  font-size:14px;font-weight:700;
  color:#274966;
  padding:12px 10px 11px;
  border-bottom:3px solid transparent;
  white-space:nowrap;
}
.nav a:hover,.nav a.active{color:var(--blue);border-bottom-color:var(--blue)}
.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:6px;padding:8px 11px;color:var(--navy);font-weight:700}

.hero{
  background:linear-gradient(90deg,#eff8ff 0%,#e4f3fd 46%,#d4ebf9 100%);
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:47% 53%;
  min-height:340px;
}
.hero-copy{
  position:relative;z-index:2;
  padding:64px 30px 55px 0;
}
.hero-copy h1{
  margin:0 0 24px;
  color:var(--navy-deep);
  font-family:serif;
  font-size:clamp(31px,4vw,48px);
  line-height:1.45;
  letter-spacing:.01em;
}
.hero-copy p{
  margin:0;color:#334f68;
  font-size:18px;line-height:1.9;
}
.hero-photo{
  position:relative;min-height:340px;
}
.hero-photo img{
  width:100%;height:100%;object-fit:cover;
}
.hero-photo::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,#e7f4fd 0%,rgba(231,244,253,.35) 20%,rgba(255,255,255,0) 55%);
}
.home-cards{padding:24px 0 26px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.home-card{
  padding:0 22px 12px;
  border-right:1px solid var(--line);
}
.home-card:first-child{padding-left:0}
.home-card:last-child{border-right:0;padding-right:0}
.home-card img{
  width:100%;height:150px;object-fit:cover;
  margin-bottom:13px;
}
.home-card h2{
  margin:0 0 7px;color:var(--navy);
  font-size:20px;line-height:1.45;
}
.home-card p{margin:0;color:#4b6175;font-size:14px;min-height:50px}
.detail-link{
  display:block;text-align:right;margin-top:10px;
  color:var(--blue);font-weight:700;text-decoration:none;
}
.detail-link::after{content:"  ›";font-size:24px;vertical-align:-2px}

.highlight-band{
  margin:0 auto 40px;
  background:linear-gradient(90deg,#eef8ff,#e7f4fc);
  border-radius:8px;
  display:grid;grid-template-columns:180px 1fr auto;
  align-items:center;gap:26px;
  padding:25px 34px;
}
.highlight-icon{
  height:86px;border-right:1px solid #bfd8ea;
  display:flex;align-items:center;justify-content:center;
}
.doc-icon{
  width:58px;height:68px;border:3px solid var(--blue);
  border-radius:4px;position:relative;
}
.doc-icon:before,.doc-icon:after{
  content:"";position:absolute;left:11px;right:11px;height:3px;background:var(--blue);
}
.doc-icon:before{top:23px;box-shadow:0 12px 0 var(--blue),0 24px 0 var(--blue)}
.highlight-band h2{margin:0 0 4px;color:var(--navy);font-size:21px}
.highlight-band p{margin:0;color:#4b6175;font-size:14px}
.btn{
  display:inline-block;background:var(--blue);
  color:#fff;text-decoration:none;font-weight:700;
  padding:12px 27px;border-radius:5px;
  box-shadow:0 4px 12px rgba(10,103,190,.16);
}
.btn:hover{background:#07589f}

.page-hero{
  background:linear-gradient(100deg,#eff8ff,#dceefa);
  border-bottom:1px solid var(--line);
}
.page-hero .container{padding-top:46px;padding-bottom:43px}
.page-hero h1{
  margin:0;color:var(--navy-deep);font-family:serif;font-size:36px;
}
.page-hero p{margin:5px 0 0;color:var(--muted)}
.main-section{padding:52px 0 64px}
.panel{
  background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:30px;
  box-shadow:0 7px 22px rgba(17,70,110,.05);
}
.panel h2{margin:0 0 18px;color:var(--navy);font-size:24px}
.panel h3{color:var(--navy);margin:27px 0 8px}
.clean-list{margin:0;padding-left:1.4em}
.clean-list li{margin:.45em 0}
.lead-date{
  display:inline-block;background:var(--pale);color:var(--navy);
  padding:5px 12px;border-radius:4px;font-weight:700;margin-bottom:18px;
}
.table-wrap{
  overflow:auto;border:1px solid var(--line);border-radius:7px;background:#fff;
}
table{border-collapse:collapse;width:100%;min-width:730px}
th,td{padding:12px 15px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#edf6fd;color:var(--navy);font-size:14px}
tbody tr:last-child td{border-bottom:0}
.section-title{
  color:var(--navy);font-size:25px;margin:0 0 18px;
}
.subsection{margin-top:38px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.profile-table{min-width:0}
.profile-table td:first-child{
  width:145px;background:#f0f6fb;color:var(--navy);font-weight:700;
}
.concept{
  margin-top:26px;background:var(--pale-2);
  border-left:4px solid var(--blue);padding:25px 28px;
}
.contact-box{max-width:760px}
.contact-mail{
  display:inline-block;margin-top:8px;
  color:var(--blue);font-size:19px;font-weight:700;
}
.notice{
  background:#fff8dc;border:1px solid #ead99a;
  padding:15px 18px;border-radius:6px;margin-bottom:22px;
}
.sitemap-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  list-style:none;padding:0;margin:0;
}
.sitemap-grid a{
  display:block;border:1px solid var(--line);background:#fff;
  padding:17px 20px;text-decoration:none;color:var(--navy);
  font-weight:700;border-radius:6px;
}
.sitemap-grid a:hover{background:var(--pale)}
.policy h2{margin-top:34px;color:var(--navy);font-size:21px}
.policy h2:first-child{margin-top:0}
.policy p{margin:.55em 0}
.site-footer{background:linear-gradient(90deg,#164d80,#0d3964);color:#fff;margin-top:0}
.footer-row{
  min-height:118px;display:flex;align-items:center;justify-content:space-between;gap:25px;
}
.footer-brand strong{display:block;font-size:24px}
.footer-brand span{font-size:12px}
.footer-links{text-align:right;font-size:13px}
.footer-links a{color:#fff;text-decoration:none;margin-left:18px}
.footer-links a:hover{text-decoration:underline}
.footer-copy{margin-top:7px;opacity:.85}
@media(max-width:1000px){
  .header-copy{display:none}
  .nav a{font-size:13px;padding-left:7px;padding-right:7px}
}
@media(max-width:820px){
  .container{width:min(100% - 28px,1180px)}
  .header-row{min-height:74px}
  .brand{min-width:0}
  .brand-main{font-size:25px}
  .brand-sub{font-size:10px}
  .menu-btn{display:block}
  .nav{
    position:absolute;left:0;right:0;top:74px;
    background:#fff;border-bottom:1px solid var(--line);
    display:none;padding:8px 14px 14px;
    box-shadow:0 12px 20px rgba(0,0,0,.06);
  }
  .nav.open{display:grid;grid-template-columns:1fr 1fr}
  .nav a{border-bottom:0;border-radius:4px;padding:10px}
  .nav a.active{background:var(--pale)}
  .hero-grid{grid-template-columns:1fr}
  .hero-copy{padding:43px 0 22px}
  .hero-photo{min-height:205px}
  .card-grid{grid-template-columns:1fr}
  .home-card,.home-card:first-child,.home-card:last-child{
    padding:20px 0;border-right:0;border-bottom:1px solid var(--line);
  }
  .home-card:last-child{border-bottom:0}
  .home-card img{height:190px}
  .highlight-band{grid-template-columns:70px 1fr;padding:22px 18px}
  .highlight-icon{height:70px}
  .highlight-band .btn{grid-column:1 / -1;text-align:center}
  .two-col{grid-template-columns:1fr}
  .sitemap-grid{grid-template-columns:1fr}
  .footer-row{display:block;padding:25px 0}
  .footer-links{text-align:left;margin-top:18px}
  .footer-links a{margin:0 16px 0 0}
}