*,
*::before,
*::after{
  box-sizing:border-box;
}

html{
  margin:0;
  padding:0;
  scroll-behavior:smooth;
}

body{
  margin:0;
  padding:0;
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:#24313d;
  background:#fff;
}

img{
  max-width:100%;
  height:auto;
  display:block;
}

a{
  color:inherit;
  text-decoration:none;
}

ul,ol{
  margin:0;
  padding:0;
}

li{
  list-style:none;
}

p,h1,h2,h3,h4,h5,h6{
  margin:0;
}

.container,
.header-inner,
.hero-inner{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}

/* =========================
   Header
========================= */

.site-header{
  background:#143f69;
  border-bottom:4px solid #d94b3d;
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding-top:14px;
  padding-bottom:14px;
}

.site-branding{
  display:flex;
  align-items:center;
  gap:18px;
  min-width:0;
  flex:0 1 auto;
  color:#fff;
}

.site-branding:hover{
  opacity:.95;
}

.site-logo-wrap{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
}

.site-logo{
  display:block;
  width:auto;
  height:56px;
  max-width:none;
}

.site-brand-text{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  min-width:0;
}

.site-title-en{
  margin:0 0 4px 0;
  font-size:12px;
  line-height:1.2;
  letter-spacing:.14em;
  color:#d9e6f2;
  white-space:nowrap;
}

.site-title-ja{
  display:flex;
  align-items:flex-end;
  gap:8px;
  flex-wrap:wrap;
  color:#fff;
}

.site-corp{
  font-size:12px;
  line-height:1.2;
  color:#eef4f9;
}

.site-name{
  font-size:22px;
  line-height:1.2;
  font-weight:700;
  color:#fff;
}

.global-nav{
  flex:1 1 auto;
}

.global-nav ul{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:22px;
  flex-wrap:wrap;
}

.global-nav a{
  display:inline-block;
  padding:6px 0;
  font-size:14px;
  line-height:1.4;
  font-weight:700;
  color:#fff;
}

.global-nav a:hover{
  opacity:.82;
}

.global-nav a.is-current{
  border-bottom:2px solid #fff;
  padding-bottom:8px;
}

/* =========================
   Hero
========================= */

.hero{
  position:relative;
  min-height:520px;
  background-image:url("../images/tokyo3.png");
  background-size:cover;
  background-position:center center;
  background-repeat:no-repeat;
  overflow:hidden;
}

.hero-overlay{
  min-height:520px;
  background:linear-gradient(90deg,rgba(20,63,105,.72) 0%,rgba(20,63,105,.56) 34%,rgba(20,63,105,.30) 62%,rgba(20,63,105,.18) 100%);
}

.hero-inner{
  padding-top:180px;
  padding-bottom:80px;
  padding-left:40px;
}

.hero-copy{
  max-width:640px;
  color:#fff;
}

.hero-copy h1{
  font-size:46px;
  line-height:1.4;
  font-weight:700;
  color:#fff;
}

.hero-text{
  margin-top:20px;
  max-width:560px;
  font-size:15px;
  line-height:2;
  color:rgba(255,255,255,.96);
}

.hero-buttons{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:170px;
  padding:13px 22px;
  border-radius:8px;
  font-size:14px;
  line-height:1.4;
  font-weight:700;
  transition:opacity .2s ease,transform .2s ease;
}

.btn:hover{
  opacity:.92;
  transform:translateY(-1px);
}

.btn-primary{
  background:#d94b3d;
  color:#fff;
}

.btn-secondary{
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.7);
}

.hero-credit{
  position:absolute;
  right:18px;
  bottom:12px;
  font-size:11px;
  line-height:1.4;
  color:rgba(255,255,255,.88);
}

/* =========================
   Common Sections
========================= */

.section-heading{
  margin-bottom:22px;
}

.section-heading h2{
  position:relative;
  padding-left:18px;
  font-size:22px;
  line-height:1.4;
  font-weight:700;
  color:#143f69;
}

.section-heading h2::before{
  content:"";
  position:absolute;
  left:0;
  top:2px;
  width:6px;
  height:32px;
  border-radius:3px;
  background:#143f69;
}

.section-heading-flex{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.text-link{
  font-size:14px;
  font-weight:700;
  color:#143f69;
}

.news-section{
  padding:36px 0 28px;
  background:#fff;
}

.news-list{
  border-top:1px solid #dfe6ec;
  background:#fff;
}

.news-item{
  display:flex;
  gap:22px;
  padding:16px 0;
  border-bottom:1px solid #dfe6ec;
}

.news-date{
  flex:0 0 110px;
  font-size:14px;
  font-weight:700;
  color:#1e4f7a;
}

.news-title{
  flex:1;
  font-size:15px;
  color:#33424f;
}

/* =========================
   Page Hero
========================= */

.page-hero{
  padding:38px 0 32px;
  background:linear-gradient(180deg,#edf3f8 0%,#e8eff6 100%);
  border-bottom:1px solid #d9e2ec;
}

.page-kicker{
  margin:0 0 10px;
  color:#c63b2d;
  font-weight:700;
  letter-spacing:.08em;
}

.page-title{
  margin:0;
  font-size:clamp(2rem,3vw,3rem);
  line-height:1.2;
  font-weight:800;
  color:#143f69;
}

.page-lead{
  max-width:900px;
  margin:18px 0 0;
  color:#4a6483;
  line-height:1.95;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  margin-bottom:14px;
  font-size:.9rem;
  color:#6c7f95;
}

.breadcrumb a{
  color:#143f69;
  font-weight:600;
  text-decoration:none;
}

.breadcrumb a:hover{
  text-decoration:underline;
}

/* =========================
   Footer
========================= */

.site-footer{
  margin-top:42px;
}

.site-footer-main{
  background:#1f4b74;
  border-top:4px solid #d94b3d;
  padding:16px 20px 14px;
  text-align:center;
  color:#fff;
}

.site-footer-brand{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
}

.site-footer-title-en{
  font-size:13px;
  line-height:1.2;
  letter-spacing:.12em;
  color:#d9e6f2;
  white-space:nowrap;
}

.site-footer-title-ja{
  display:flex;
  align-items:flex-end;
  justify-content:center;
  gap:8px;
  flex-wrap:wrap;
  color:#fff;
}

.site-footer-corp{
  font-size:12px;
  line-height:1.2;
  color:#eef4f9;
}

.site-footer-name{
  font-size:18px;
  line-height:1.2;
  font-weight:700;
  color:#fff;
}

.site-footer-copy{
  padding:8px 20px 10px;
  text-align:center;
  font-size:11px;
  line-height:1.5;
  color:#666;
  background:#f5f5f5;
}
/* =========================
   Back to Top
========================= */

.back-to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:48px;
  height:48px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#143f69;
  color:#fff;
  text-decoration:none;
  font-weight:700;
  box-shadow:0 4px 12px rgba(0,0,0,.18);
  transition:background-color .2s ease,transform .2s ease;
  z-index:100;
}

.back-to-top:hover,
.back-to-top:focus{
  background:#c63b2d;
  transform:translateY(-2px);
}

/* =========================
   Responsive
========================= */

@media (max-width:1024px){
  .header-inner{
    flex-direction:column;
    align-items:flex-start;
  }

  .site-branding{
    width:100%;
  }

  .global-nav{
    width:100%;
  }

  .global-nav ul{
    justify-content:flex-start;
    gap:14px 18px;
  }
}

@media (max-width:768px){
  .container,
  .header-inner,
  .hero-inner{
    padding-left:16px;
    padding-right:16px;
  }

  .site-logo{
    height:46px;
  }

  .site-title-en{
    font-size:11px;
    letter-spacing:.08em;
  }

  .site-corp{
    font-size:11px;
  }

  .site-name{
    font-size:20px;
  }

  .hero-inner{
    padding-top:140px;
    padding-bottom:64px;
    padding-left:16px;
  }

  .hero-copy h1{
    font-size:34px;
  }
}

@media (max-width:480px){
  .site-branding{
    gap:10px;
    align-items:center;
  }

  .site-logo{
    height:40px;
  }

  .site-title-ja{
    gap:4px 6px;
  }

  .site-name{
    font-size:18px;
  }

  .global-nav a{
    font-size:13px;
  }

  .hero-copy h1{
    font-size:28px;
  }

  .hero-text{
    font-size:14px;
    line-height:1.8;
  }
}