:root{
  --navy:#16243d; --navy2:#1f3355; --ink:#26303e; --gray:#5d6774;
  --bg:#ffffff; --bg2:#f4f6f9; --line:#e3e8ee;
  --yellow:#f5b301; --yellow-d:#c98f00;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{overflow-x:clip}
body{font-family:'Noto Sans JP',sans-serif;color:var(--ink);background:var(--bg);line-height:1.8}
img{max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* header */
header{position:sticky;top:0;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);z-index:10}
.hd{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center}
.logo img.mark{height:26px;width:auto;display:block}
.hd-right{display:flex;align-items:center;gap:22px}
.hd-kana{height:14px;width:auto;display:block}
.menu-btn{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;padding:9px 8px}
.menu-btn span{display:block;height:2px;background:var(--navy);margin:4.5px 0;border-radius:2px;transition:.2s}
body.nav-open .menu-btn span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
body.nav-open .menu-btn span:nth-child(2){opacity:0}
body.nav-open .menu-btn span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
nav{display:flex;gap:26px;font-size:14px;font-weight:500}
nav a{white-space:nowrap}
nav a:hover{color:var(--yellow-d)}
.cta{background:var(--navy);color:#fff;padding:9px 20px;border-radius:6px;font-size:14px;font-weight:700}
.cta:hover{background:var(--navy2);color:#fff}

/* hero (top) */
.hero{background:linear-gradient(280deg,rgba(13,24,44,.88) 0%,rgba(13,24,44,.62) 55%,rgba(13,24,44,.22) 100%),url('../images/hero_uchiyama.jpg') center 40%/cover no-repeat;color:#fff;position:relative;overflow:hidden}
.hero-in{padding:56px 48px 72px 20px;max-width:640px;margin-left:auto;display:flex;flex-direction:column;min-height:660px}
.hero-in p{margin-top:auto;padding-top:190px}
.mission{display:inline-block;align-self:flex-start;width:fit-content;border:1px solid #ffffff55;color:#ffe9a8;font-size:12.5px;letter-spacing:.12em;padding:5px 14px;border-radius:99px;margin-bottom:22px}.hero h1{font-size:42px;font-weight:900;line-height:1.45;letter-spacing:.03em}
.hero h1 .em{color:var(--yellow)}
.hero p{margin-top:22px;font-size:15.5px;color:#dbe3ef}
.hero .btns{margin-top:34px;display:flex;gap:14px}
.btn-y{background:var(--yellow);color:var(--navy);font-weight:700;padding:13px 30px;border-radius:6px;font-size:15px;display:inline-block}
.btn-o{border:1.5px solid #ffffff88;color:#fff;font-weight:500;padding:13px 30px;border-radius:6px;font-size:15px;display:inline-block}

/* keywords strip */
.strip{background:#0e1728;color:#fff}
.strip .in{display:flex;justify-content:center;gap:0;padding:26px 20px;flex-wrap:wrap}
.strip .kw{padding:0 38px;text-align:center;border-right:1px solid #ffffff22}
.strip .kw:last-child{border-right:none}
.strip .kw b{display:block;font-size:22px;font-weight:900;letter-spacing:.1em;color:var(--yellow)}
.strip .kw span{font-size:11.5px;color:#9aa7ba;letter-spacing:.08em}

/* page hero (subpages) */
.page-hero{background:linear-gradient(105deg,var(--navy),#2c4a7c);color:#fff;padding:58px 0}
.page-hero .crumb{font-size:12.5px;color:#c8d2e2;margin-bottom:8px}
.page-hero .crumb a:hover{color:var(--yellow)}
.page-hero h1{font-size:32px;font-weight:900;letter-spacing:.03em}
.page-hero .en{color:var(--yellow);font-size:12.5px;font-weight:700;letter-spacing:.18em;margin-top:6px}

/* section common */
section{padding:84px 0}
.sec-label{color:var(--yellow-d);font-weight:700;font-size:13px;letter-spacing:.18em}
h2{font-size:30px;font-weight:900;margin-top:6px;letter-spacing:.02em}
.lead{margin-top:14px;color:var(--gray);font-size:15px;max-width:760px}

/* robotics cards (top) */
.biz{background:var(--bg2)}
.dom-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
.dcard{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column}
.dcard .ph{height:140px;display:grid;place-items:center;color:#fff;font-size:12.5px;letter-spacing:.05em;position:relative}
.ph.sky{background:linear-gradient(120deg,#33507f,#16243d)}
.ph.land{background:linear-gradient(120deg,#3d7a4f,#1d3d28)}
.ph.water{background:linear-gradient(120deg,#1f6f8a,#0d3242)}
.ph.indoor{background:linear-gradient(120deg,#5f5f68,#2b2b31)}
.dcard .ph::after{content:"";position:absolute;inset:0;pointer-events:none}
.ph.sky::after{background:linear-gradient(180deg,transparent 55%,rgba(22,36,61,.62))}
.ph.land::after{background:linear-gradient(180deg,transparent 55%,rgba(29,61,40,.62))}
.ph.water::after{background:linear-gradient(180deg,transparent 55%,rgba(13,50,66,.62))}
.ph.indoor::after{background:linear-gradient(180deg,transparent 55%,rgba(43,43,49,.62))}
.dcard.c-sky{border-top:4px solid #33507f}
.dcard.c-land{border-top:4px solid #3d7a4f}
.dcard.c-water{border-top:4px solid #1f6f8a}
.dcard.c-indoor{border-top:4px solid #5f5f68}
.dcard .bd{padding:0 24px 26px}
.dcard h3{margin:0 -24px;padding:9px 24px;font-size:16.5px;color:#fff}
.dcard.c-sky h3{background:#33507f}
.dcard.c-land h3{background:#3d7a4f}
.dcard.c-water h3{background:#1f6f8a}
.dcard.c-indoor h3{background:#5f5f68}
.dcard .sub{margin-top:10px}
.dcard .dom{position:absolute;top:12px;left:12px;z-index:1;background:var(--yellow);color:#fff;font-size:11.5px;font-weight:900;letter-spacing:.15em;padding:3px 12px;border-radius:3px}
.ph.sky .dom{background:#33507f}
.ph.land .dom{background:#3d7a4f}
.ph.water .dom{background:#1f6f8a}
.ph.indoor .dom{background:#5f5f68}
.dcard .bd{padding:22px 24px 26px;flex:1}
.dcard h3{font-size:18px;font-weight:700}
.dcard .sub{font-size:12px;color:var(--gray);margin-top:2px}
.dcard ul{list-style:none;margin-top:12px}
.dcard li{font-size:13.5px;color:var(--gray);padding:4px 0 4px 18px;position:relative}
.dcard li::before{content:"▸";position:absolute;left:2px;color:var(--yellow-d)}
.dcard .more{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--yellow-d)}

/* IT band (top) — 紺色帯・写真右 */
.it-band{margin-top:40px;background:var(--navy);color:#fff;border-radius:10px;display:grid;grid-template-columns:1.2fr 1fr;overflow:hidden}
.it-band .ph{min-height:220px;background-size:cover}
.it-band .bd{padding:26px 34px 28px}
.it-band ul{list-style:none}
.it-band li{padding:10px 0 10px 22px;position:relative;font-size:14px;color:#dbe3ef;border-bottom:1px dashed #ffffff26}
.it-band li::before{content:"▸";position:absolute;left:2px;color:var(--yellow)}
.it-band .more{display:inline-block;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--yellow)}

/* trust */
.trust .grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:40px;align-items:start}
.trust ul{list-style:none;margin-top:8px}
.trust li{padding:16px 0;border-bottom:1px solid var(--line);display:flex;gap:14px;font-size:14.5px}
.trust li .ic{flex:none;width:26px;height:26px;border-radius:50%;background:var(--navy);color:var(--yellow);display:grid;place-items:center;font-size:13px;font-weight:900}
.badge-box{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:28px;text-align:center}
.badge-ph{width:120px;height:120px;margin:0 auto;border:2px dashed #b8c2cf;border-radius:8px;display:grid;place-items:center;font-size:11px;color:var(--gray);line-height:1.5}
.badge-box p{margin-top:14px;font-size:13px;color:var(--gray)}

/* news */
.news{background:var(--bg2)}
.news-list{margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:10px}
.news-list a{display:flex;gap:22px;padding:20px 28px;border-bottom:1px solid var(--line);font-size:14.5px;align-items:baseline}
.news-list a:last-child{border-bottom:none}
.news-list time{flex:none;color:var(--gray);font-size:13px;width:90px}
.news-list .cat{flex:none;background:var(--navy);color:#fff;font-size:11px;padding:2px 10px;border-radius:3px}

.bf-title{font-size:14px;font-weight:700;color:var(--gray);letter-spacing:.06em;padding-left:12px;border-left:3px solid var(--yellow)}
#blog-feed .cat{background:var(--yellow);color:var(--navy)}

/* company table */
.co table{width:100%;margin-top:36px;border-collapse:collapse;font-size:14.5px}
.co th{width:180px;text-align:left;padding:15px 10px;border-bottom:1px solid var(--line);color:var(--gray);font-weight:500;vertical-align:top}
.co td{padding:15px 10px;border-bottom:1px solid var(--line)}

/* contact */
.contact{background:var(--navy);color:#fff;text-align:center}
.contact h2{color:#fff}
.contact p{margin-top:14px;color:#c8d2e2;font-size:15px}
.contact .btns{margin-top:30px;display:flex;gap:16px;justify-content:center}
.contact .tel{font-size:26px;font-weight:900;letter-spacing:.04em;margin-top:26px}
.contact .tel small{display:block;font-size:12px;font-weight:400;color:#c8d2e2}

/* service detail sections */
.svc{padding:72px 0;border-bottom:1px solid var(--line)}
.svc:last-of-type{border-bottom:none}
.svc .head{display:flex;align-items:center;gap:14px}
.svc .dom-tag{background:var(--yellow);color:var(--navy);font-size:12px;font-weight:900;letter-spacing:.15em;padding:4px 14px;border-radius:3px}
.svc h2{font-size:26px;margin-top:0}
.svc .sub-en{color:var(--gray);font-size:12px;letter-spacing:.12em}
.svc .cols{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;margin-top:28px;align-items:start}
.svc .ph-box{border-radius:10px;min-height:220px;display:grid;place-items:center;color:#fff;font-size:12.5px}
.svc p{margin-top:8px;font-size:14.5px}
.svc ul.feat{list-style:none;margin-top:16px}
.svc ul.feat li{padding:10px 0 10px 24px;border-bottom:1px dashed var(--line);font-size:14px;position:relative}
.svc ul.feat li::before{content:"▸";position:absolute;left:4px;color:var(--yellow-d)}
.svc .note{margin-top:14px;font-size:12.5px;color:var(--gray)}
.svc .more{display:inline-block;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--yellow-d)}

/* 事業内容ページ テーマカラー */
.svc .head h2{display:inline-block;padding-bottom:4px;border-bottom:3px solid transparent}
#sky .dom-tag{background:#33507f;color:#fff}
#land .dom-tag{background:#3d7a4f;color:#fff}
#water .dom-tag{background:#1f6f8a;color:#fff}
#indoor .dom-tag{background:#5f5f68;color:#fff}
#it .dom-tag{background:var(--navy);color:#fff}
#sky .head h2{border-color:#33507f}
#land .head h2{border-color:#3d7a4f}
#water .head h2{border-color:#1f6f8a}
#indoor .head h2{border-color:#5f5f68}
#it .head h2{border-color:var(--navy)}
#sky ul.feat li::before{color:#33507f}
#land ul.feat li::before{color:#3d7a4f}
#water ul.feat li::before{color:#1f6f8a}
#indoor ul.feat li::before{color:#5f5f68}
#it ul.feat li::before{color:var(--navy)}
.svc .ph-box{position:relative;overflow:hidden}
.svc .ph-box::after{content:"";position:absolute;inset:0;pointer-events:none}
#sky .ph-box::after{background:linear-gradient(180deg,transparent 60%,rgba(22,36,61,.55))}
#land .ph-box::after{background:linear-gradient(180deg,transparent 60%,rgba(29,61,40,.55))}
#water .ph-box::after{background:linear-gradient(180deg,transparent 60%,rgba(13,50,66,.55))}
#indoor .ph-box::after{background:linear-gradient(180deg,transparent 60%,rgba(43,43,49,.55))}
#it .ph-box::after{background:linear-gradient(180deg,transparent 60%,rgba(22,36,61,.55))}

/* prose (policy pages) */
.prose{max-width:800px;padding:72px 0}
.prose h2{font-size:20px;margin-top:38px;padding-left:14px;border-left:4px solid var(--yellow)}
.prose p{margin-top:12px;font-size:14.5px}
.prose ol,.prose ul{margin:12px 0 0 24px;font-size:14.5px}
.prose li{margin-top:6px}
.prose .date{margin-top:40px;text-align:right;font-size:14px;color:var(--gray)}
.prose .draft-note{background:#fff6e0;border:1px solid #e8cf8a;border-radius:8px;padding:14px 18px;font-size:13px;color:#7a5c00;margin-bottom:28px}

/* contact page */
.contact-page{padding:64px 0 84px}
.cp-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:28px;margin-top:32px;align-items:start}
.cp-form iframe{width:100%;height:1250px;border:1px solid var(--line);border-radius:10px;background:#fff}
.small-note{margin-top:10px;font-size:12.5px;color:var(--gray)}
.small-note a{color:var(--yellow-d);font-weight:700}
.cp-card{background:var(--navy);color:#fff;border-radius:10px;padding:22px 24px;margin-bottom:16px}
.cp-card h3{font-size:14px;color:#ffe9a8;letter-spacing:.06em;margin-bottom:8px}
.cp-card p{font-size:13.5px;color:#dbe3ef}
.cp-tel{font-size:24px;font-weight:900;letter-spacing:.03em}
.cp-mail{color:#fff;font-weight:700;font-size:15px;text-decoration:underline}
@media(max-width:760px){
  .cp-grid{grid-template-columns:1fr}
  .cp-form iframe{height:1350px}
}

/* footer */
footer{background:#0e1728;color:#9aa7ba;font-size:13px;padding:36px 0}
.ft{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.ft nav{gap:14px 20px;font-size:12.5px;flex-wrap:wrap}

@media(max-width:1000px){
  .dom-cards{grid-template-columns:1fr 1fr}
  .hd-kana{display:none}
  nav.gnav{gap:18px}
}
@media(max-width:760px){
  .it-band,.trust .grid,.svc .cols{grid-template-columns:1fr}
  .it-band .ph{min-height:170px;order:-1}
  .hero h1{font-size:30px;letter-spacing:0}
  .hero-in{min-height:700px;padding-right:20px;padding-bottom:40px}
  .hero-in p{margin-top:auto;font-size:13.5px;line-height:1.9;padding-top:24px}
  nav.gnav{display:none}
  .menu-btn{display:block}
  body.nav-open nav.gnav{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 20px 18px;gap:0;box-shadow:0 10px 24px rgba(0,0,0,.10)}
  body.nav-open nav.gnav a{padding:13px 4px;border-bottom:1px solid var(--line);font-size:15px}
  body.nav-open nav.gnav a.cta{margin-top:14px;text-align:center;border-bottom:none;color:#fff}
}
@media(max-width:640px){
  .dom-cards{grid-template-columns:1fr}
}
@media(max-width:560px){
  .hero{background-position:22% 40%}
  .hero h1{font-size:28px}
  .hero-in{min-height:640px;padding-left:14px;padding-right:14px}
  .hero-in p{font-size:13px}
  .hd-kana{display:none}
}
@media(max-width:640px){
  .news-list a{flex-wrap:wrap;gap:8px 14px;padding:14px 18px}
  .news-list a>span:not(.cat){flex-basis:100%;line-height:1.7}
}