/* トップページ専用（2026-10 リニューアル）。他ページのBiND用CSSとは独立 */
:root{
  --navy:#0b2a4a;
  --navy-2:#123d66;
  --blue:#0a6fc2;
  --blue-l:#e9f3fb;
  --text:#1f2a37;
  --muted:#5b6b7c;
  --line:#dbe4ee;
  --bg:#ffffff;
  --bg-2:#f5f8fb;
  --radius:10px;
  --wrap:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;color:var(--text);background:var(--bg);line-height:1.8;font-size:16px;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.topbar{background:var(--navy);color:#cfdbe8;font-size:12px}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:6px;padding-bottom:6px}
.topbar p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:24px;height:76px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:48px;width:auto}
.brand .name{font-weight:700;font-size:17px;color:var(--navy);line-height:1.3}
.brand .name small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.04em}
.gnav{margin-left:auto}
.gnav ul{display:flex;list-style:none;gap:4px}
.gnav a{display:block;padding:8px 10px;font-size:14px;font-weight:500;border-radius:6px;white-space:nowrap}
.gnav a:hover{background:var(--blue-l);color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:#085a9e}
.btn-ghost{border:1.5px solid #fff;color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-outline{border:1.5px solid var(--blue);color:var(--blue)}
.btn-outline:hover{background:var(--blue-l)}
.header .btn{padding:10px 18px;font-size:14px;flex-shrink:0}
.menu-btn{display:none;margin-left:auto;background:none;border:0;width:44px;height:44px;cursor:pointer}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:24px;height:2px;background:var(--navy);margin:0 auto;position:relative;transition:.2s}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0}
.menu-btn span::before{top:-7px}
.menu-btn span::after{top:7px}
.menu-open .menu-btn span{background:transparent}
.menu-open .menu-btn span::before{top:0;transform:rotate(45deg)}
.menu-open .menu-btn span::after{top:0;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:var(--navy) url(_src/41858/img20180923112930293131.jpg) center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,32,58,.92) 0%,rgba(8,32,58,.75) 45%,rgba(8,32,58,.25) 100%)}
.hero .wrap{position:relative;padding-top:110px;padding-bottom:110px}
.hero .eyebrow{display:inline-block;font-size:13px;letter-spacing:.12em;color:#9fd0f5;border:1px solid rgba(159,208,245,.5);padding:4px 12px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.35;font-weight:700;letter-spacing:.02em}
.hero .lead{margin-top:20px;font-size:17px;max-width:560px;color:#e4eef8}
.hero .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;list-style:none}
.hero .tags li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:4px 14px;border-radius:999px;font-size:14px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}

/* ---------- sections ---------- */
section{padding:96px 0}
.sec-alt{background:var(--bg-2)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head .en{display:block;font-size:13px;letter-spacing:.2em;color:var(--blue);font-weight:700}
.sec-head h2{font-size:32px;color:var(--navy);line-height:1.4;margin-top:6px}
.sec-head p{margin-top:12px;color:var(--muted)}

/* mission */
.mission{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.mission h3{font-size:26px;line-height:1.6;color:var(--navy)}
.mission p{margin-top:16px;color:var(--muted)}
.mission .media{border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;background:#000}
.mission .media iframe{width:100%;height:100%;border:0;display:block}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
.stats div{background:var(--blue-l);border-radius:var(--radius);padding:14px 10px;text-align:center}
.stats b{display:block;color:var(--navy);font-size:15px}
.stats span{font-size:12px;color:var(--muted)}

/* products */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.card:hover{box-shadow:0 10px 28px rgba(11,42,74,.12);transform:translateY(-3px)}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:19px;color:var(--navy)}
.card p{margin-top:10px;font-size:14.5px;color:var(--muted);flex:1}
.card .more{margin-top:16px;font-size:14px;font-weight:700;color:var(--blue)}
.card .more::after{content:" →"}

/* esco band */
.esco{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;border-radius:16px;padding:56px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.esco .en{font-size:13px;letter-spacing:.2em;color:#9fd0f5;font-weight:700}
.esco h2{font-size:30px;line-height:1.45;margin-top:6px}
.esco p{margin-top:14px;color:#d5e3f1}
.esco ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.esco li{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:18px}
.esco li b{display:block;font-size:16px}
.esco li span{font-size:13px;color:#c4d6e8;line-height:1.6;display:block;margin-top:4px}
.esco .btn{margin-top:24px}

/* achievements */
.works{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.work{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);transition:.2s}
.work:hover{box-shadow:0 10px 28px rgba(11,42,74,.12)}
.work img{aspect-ratio:4/3;object-fit:cover;width:100%}
.work div{padding:14px 16px}
.work b{display:block;font-size:15px;color:var(--navy);line-height:1.5}
.work span{font-size:12px;color:var(--muted)}
.center{text-align:center;margin-top:40px}

/* news + access */
.two{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.two h2{font-size:24px;color:var(--navy);margin-bottom:16px}
.two h2 small{font-size:12px;color:var(--blue);letter-spacing:.2em;margin-left:10px}
.news{list-style:none;border-top:1px solid var(--line)}
.news li{border-bottom:1px solid var(--line)}
.news a,.news .news-item{display:flex;gap:20px;padding:16px 4px}
.news a:hover{color:var(--blue)}
.news time{color:var(--muted);font-size:14px;flex-shrink:0;width:96px}
.map{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3}
.map iframe{width:100%;height:100%;border:0;display:block}
.addr{margin-top:12px;font-size:14px;color:var(--muted)}

/* contact */
.contact{background:var(--blue-l)}
.branches{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:8px}
.branch{display:block;background:#fff;border-radius:var(--radius);padding:20px;text-align:center;border:1px solid var(--line);transition:.2s}
.branch:hover{border-color:var(--blue)}
.branch span{display:block;font-size:13px;color:var(--muted)}
.branch b{display:block;font-size:18px;color:var(--navy);letter-spacing:.02em;margin-top:2px}
.contact .cta{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:32px}
.hours{text-align:center;color:var(--muted);font-size:14px;margin-top:16px}

/* footer */
.footer{background:var(--navy);color:#b9c9da;font-size:14px;padding:56px 0 24px}
.footer .grid{display:grid;grid-template-columns:1.3fr 2fr;gap:40px}
.footer .co b{color:#fff;font-size:17px;display:block}
.footer .co p{margin-top:8px;line-height:1.9}
.footer nav{display:grid;grid-template-columns:repeat(3,1fr);gap:4px 20px}
.footer nav a{padding:4px 0}
.footer nav a:hover{color:#fff}
.footer .group{margin-top:40px;padding-top:32px;border-top:1px solid rgba(255,255,255,.12);text-align:center}
.footer .group-title{font-size:13px;letter-spacing:.15em;color:#9fb4ca;margin-bottom:16px}
.footer .group-list{display:flex;justify-content:center;flex-wrap:wrap;gap:20px}
.footer .g-item{display:flex;align-items:center;justify-content:center;background:#fff;border-radius:6px;overflow:hidden;width:288px;height:90px}
.footer .g-item img{width:100%;height:100%;object-fit:cover}
.footer .g-hd img{width:auto;height:76px;object-fit:contain}
.footer a.g-item:hover{opacity:.85}
.footer .copy{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;font-size:12px;text-align:center}

/* mobile fixed call bar */
.callbar{display:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .header .wrap{height:64px;gap:12px}
  .brand img{height:40px}
  .header .btn{display:none}
  .menu-btn{display:block}
  .gnav{position:fixed;top:64px;left:0;right:0;bottom:0;background:#fff;padding:12px 20px 40px;overflow-y:auto;transform:translateX(100%);transition:.25s;margin:0}
  .menu-open .gnav{transform:none}
  .gnav ul{flex-direction:column;gap:0}
  .gnav a{font-size:16px;padding:16px 4px;border-bottom:1px solid var(--line);border-radius:0}
  .gnav .btn{display:flex;margin-top:20px;width:100%;color:#fff;border:0}
  .topbar{display:none}
}
@media (max-width:960px){
  .hero .wrap{padding-top:72px;padding-bottom:72px}
  .hero h1{font-size:34px}
  .mission,.two,.esco{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .works{grid-template-columns:1fr 1fr}
  .branches{grid-template-columns:repeat(3,1fr)}
  .footer .grid{grid-template-columns:1fr}
}
@media (min-width:1101px){.gnav .btn{display:none}}
@media (max-width:600px){
  body{font-size:15px;padding-bottom:64px}
  .topbar{display:none}
  .brand .name{font-size:15px}
  .brand .name small{font-size:10px}
  section{padding:64px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:24px}
  .hero{background-position:70% center}
  .hero::before{background:linear-gradient(180deg,rgba(8,32,58,.85) 0%,rgba(8,32,58,.7) 100%)}
  .hero .wrap{padding-top:56px;padding-bottom:56px}
  .hero h1{font-size:28px}
  .hero .lead{font-size:15px}
  .hero .cta .btn{flex:1 1 100%}
  .mission h3{font-size:20px}
  .stats b{font-size:13px}
  .cards{grid-template-columns:1fr}
  .esco{padding:32px 22px;border-radius:12px}
  .esco h2{font-size:22px}
  .esco ul{grid-template-columns:1fr}
  .works{gap:12px}
  .work div{padding:10px 12px}
  .work b{font-size:13px}
  .news a,.news .news-item{flex-direction:column;gap:2px}
  .branches{grid-template-columns:1fr 1fr}
  .branch:last-child{grid-column:1/-1}
  .footer .g-item{width:100%;max-width:320px;height:100px}
  .branches{gap:10px}
  .branch{padding:14px 8px}
  .branch b{font-size:16px}
  .footer nav{grid-template-columns:1fr 1fr}
  .callbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:60;box-shadow:0 -4px 16px rgba(0,0,0,.12)}
  .callbar a{display:flex;align-items:center;justify-content:center;gap:6px;height:56px;font-weight:700;font-size:15px}
  .callbar .tel{background:#fff;color:var(--navy)}
  .callbar .mail{background:var(--blue);color:#fff}
}