/* 共通レイアウト */
:root{--width:1120px;--blue:#007cbb}*{box-sizing:border-box}body{margin:0;color:#222;background:#fff;font:14px/1.8 Arial,"Noto Sans JP","メイリオ",sans-serif}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}img{max-width:100%;height:auto;vertical-align:middle}ul{list-style:none;margin:0;padding:0}.container{width:min(var(--width),calc(100% - 40px));margin-inline:auto}[hidden]{display:none!important}.skip{position:absolute;left:12px;top:-100px;background:#fff;padding:12px;z-index:100}.skip:focus{top:12px}
/* ヘッダーと業務案内のサブメニュー */
.site-header{height:70px;background:linear-gradient(#fafafa,#ccc);position:relative;z-index:10}.header-inner{position:relative;display:flex;align-items:center;min-height:70px;padding-left:184px}.brand{position:absolute;top:0;left:0;margin:0;width:170px;background:#fff;line-height:1}.brand img{width:170px;display:block}.nav-list{display:flex;align-items:stretch;gap:4px}.nav-list>li{position:relative;display:flex;align-items:center}.nav-list>li>a{padding:23px 12px;font-size:13px;white-space:nowrap}.submenu-toggle{border:0;background:transparent;padding:8px;color:#444}.submenu{display:none;position:absolute;top:100%;left:0;min-width:180px;background:#fff;box-shadow:0 4px 12px #0002;border-top:3px solid var(--blue)}.submenu a{display:block;padding:12px 18px}.submenu a:hover{background:#eee}.has-submenu.open>.submenu{display:block}.menu-toggle{display:none}
/* 写真切り替え */
.hero{position:relative}.slides{aspect-ratio:1120/375;overflow:hidden;background:#e5eef3}.slide{width:100%;height:100%;object-fit:cover;display:block}.slide-dots{position:absolute;right:4%;top:30%;display:grid;gap:12px}.slide-dots button{width:13px;height:13px;padding:0;border:1px solid white;border-radius:50%;background:#ffffff44;box-shadow:0 0 2px #333}.slide-dots button[aria-pressed=true]{background:#00b5e5}.slide-pause{position:absolute;bottom:12px;right:18px;background:#fff;border:0;padding:3px 12px}.page-title{background:#eee;padding:23px 0;font-size:22px}.breadcrumb{border-bottom:1px dotted #ccc;color:#666;padding:14px 20px 0;font-weight:bold}
/* 本文 */
.content{display:grid;grid-template-columns:minmax(0,784px) minmax(0,280px);gap:56px;padding-top:25px;padding-bottom:170px}.main-column{min-width:0}.banners{display:grid;gap:36px}.banners>a{display:block}.banners img{width:100%}.movie-link{text-align:center;min-height:20px}h2{font-size:21px;font-weight:400;line-height:1.35;border-left:5px solid #666;padding-left:10px;margin:36px 0 18px}.news-list{margin:0 30px}.news-list li{border-top:1px solid #ccc}.news-list li:last-child{border-bottom:1px solid #ccc}.news-list a{display:grid;grid-template-columns:132px 1fr;gap:0;padding:8px 4px;line-height:1.7}.news-list time{color:#777;white-space:nowrap}.about{margin-top:48px}.about p{margin:16px 30px;color:#666;line-height:1.9}.aside-heading{background:#000;color:white;margin:0 0 14px;padding:10px;font-size:17px;font-weight:bold}.group-links{display:grid;gap:16px;padding:0 8px}.group-links a{display:flex;align-items:center;min-height:36px}.group-links img{max-width:100%;max-height:42px;object-fit:contain;object-position:left}
/* フッター */
.site-footer{background:#ccc;color:#606060;padding-top:24px;font-size:13px}.footer-grid{display:grid;grid-template-columns:repeat(3,1fr) 1.25fr;gap:32px;padding:0 12px 40px}.footer-grid h2{font-size:13px;margin:0 0 20px;font-weight:400}.footer-grid li{margin:8px 0}.contact{display:flex;align-items:flex-start;gap:10px}.contact img{width:50px}.contact address{font-style:normal;line-height:2.4;overflow-wrap:anywhere}.copyright{padding:26px 0;border-top:1px solid #eee}.back-top{position:fixed;bottom:20px;right:20px;display:grid;place-items:center;width:48px;height:48px;background:#555;color:#fff;border-radius:50%;font-size:30px;box-shadow:0 1px 3px #777}
@media(hover:hover) and (min-width:961px){.has-submenu:hover>.submenu{display:block}}
/* スマホ・タブレット：ナビゲーションは同じHTMLを使用 */
@media(max-width:960px){.site-header{height:auto;background:#fff;border-bottom:1px solid #ddd}.header-inner{padding:0;min-height:96px;justify-content:space-between;flex-wrap:wrap}.brand{position:static;width:90px}.brand img{width:90px}.menu-toggle{display:block;background:#fff;border:1px solid #bbb;border-radius:3px;padding:9px 14px}#global-nav{width:100%}.js #global-nav:not(.is-open){display:none}.nav-list{display:block;padding:12px 0}.nav-list>li{display:flex;flex-wrap:wrap;border-top:1px solid #ddd}.nav-list>li>a{display:block;padding:13px 12px;flex:1}.submenu-toggle{width:48px;min-height:48px;border-left:1px solid #ddd}.submenu{position:static;width:100%;box-shadow:none;background:#f5f5f5;border-top:1px solid #ddd}.submenu a{padding:12px 28px}.hero{width:100%}.content{grid-template-columns:minmax(0,1fr) 240px;gap:28px;padding-bottom:80px}.news-list{margin:0}.news-list a{grid-template-columns:1fr;gap:2px}.about p{margin-inline:0}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.container{width:calc(100% - 32px)}.hero{width:100%}.slides{aspect-ratio:2.3}.slide-dots{top:15%;right:14px;gap:10px}.slide-dots button{width:12px;height:12px}.page-title{padding:14px 0;font-size:19px}.breadcrumb{padding:12px 0 4px;font-size:12px}.content{display:block;padding-top:20px;padding-bottom:60px}.banners{gap:24px}h2{font-size:20px;margin-top:30px}.news-list a{padding:11px 0}.news-list time{font-size:13px}.about{margin-top:36px}aside{margin-top:40px}.group-links{grid-template-columns:1fr;gap:12px}.group-links img{max-width:260px}.footer-grid{gap:28px 18px;padding-bottom:28px}.footer-grid section:last-child{grid-column:1/-1}.footer-grid h2{margin-bottom:14px}.copyright{font-size:11px;padding:20px 0 70px}.back-top{width:42px;height:42px;right:14px;bottom:14px}}

/* 下層ページ・会社概要 */
.subpage .site-header{margin-bottom:100px}
.company-heading{border:0;padding:0;margin:14px 0 18px;font-size:20px;font-weight:bold;color:#666}
.company-table{width:100%;border-collapse:collapse;table-layout:fixed;color:#666;font-size:16px;line-height:1.6}
.company-table th,.company-table td{border-bottom:1px dotted #ccc;padding:11px 0;vertical-align:middle;text-align:left;font-weight:normal;overflow-wrap:anywhere}
.company-table th{width:28%;padding-right:18px}
.company-pairs{margin:0}.company-pairs>div{display:grid;grid-template-columns:minmax(0,1fr) minmax(80px,.95fr);gap:12px}.company-pairs dt,.company-pairs dd{margin:0}
.company-statement{margin:36px 0 0}.company-statement img{display:block;width:750px;max-width:100%;height:auto}
@media(max-width:960px){.subpage .site-header{margin-bottom:0}.company-table{font-size:14px}.company-table th{width:25%}.company-pairs>div{grid-template-columns:minmax(0,1fr) 70px;gap:8px}}
@media(max-width:640px){.company-table th{width:26%;padding-right:10px}.company-table th,.company-table td{padding-block:12px}.company-heading{margin-top:0}.company-pairs>div{grid-template-columns:minmax(0,1fr) 66px;gap:5px}.company-statement{margin-top:28px}}

/* 沿革：年代と内容、写真をひとまとまりにする */
.history-list{color:#666;font-size:16px;line-height:1.7}
.history-item{display:grid;grid-template-columns:27% minmax(0,1fr);border-bottom:1px dotted #ccc}
.history-date{padding:11px 16px 11px 0}
.history-detail{min-width:0}
.history-detail>p{margin:0;padding:11px 0}
.history-photos{display:flex;flex-wrap:wrap;align-items:flex-start;gap:8px 10px;border-top:1px dotted #ccc;padding:10px 0 18px}
.history-photos figure{margin:0;max-width:100%;display:flex;align-items:flex-end;flex-wrap:wrap;gap:8px}
.history-photos img{width:200px;max-width:100%;height:auto;display:block}
.history-photos .portrait img{width:137px}
.history-photos a{max-width:100%}
.history-photos figcaption{font-size:13px}
.aerial-photos{flex-direction:column}
@media(max-width:960px){.history-list{font-size:14px}.history-item{grid-template-columns:26% minmax(0,1fr)}.history-date{padding-right:10px}}
@media(max-width:640px){.history-item{display:block;padding:16px 0}.history-date{padding:0 0 4px;font-weight:bold}.history-detail>p{padding:0 0 10px}.history-photos{border:0;padding:0;gap:12px}.history-photos figure{display:block}.history-photos figcaption{margin-top:4px}.history-photos img{width:200px}.history-photos .portrait img{width:137px}}

.history-list{list-style:none;margin:0;padding:0}

/* 写真の拡大表示（共通） */
.photo-viewer-open{overflow:hidden}
.photo-viewer{position:fixed;inset:0;width:100%;max-width:none;height:100%;max-height:none;margin:0;border:0;padding:24px;background:transparent;color:#fff}
.photo-viewer[open]{display:grid;place-items:center;animation:photo-fade-in .25s ease-out}
.photo-viewer::backdrop{background:rgba(0,0,0,.82);animation:photo-fade-in .25s ease-out}
.photo-viewer-panel{position:relative;max-width:100%;max-height:100%;overflow:auto;background:#171717;padding:48px 14px 14px;border-radius:4px;box-shadow:0 8px 40px #0008}
.photo-viewer figure{margin:0;text-align:center}
.photo-viewer img{display:block;max-width:100%;max-height:calc(100dvh - 180px);width:auto;height:auto;margin:auto;object-fit:contain}
.photo-viewer figcaption{padding:10px 6px 0;font-size:14px;overflow-wrap:anywhere}
.photo-viewer-close{position:absolute;top:2px;right:4px;min-width:44px;min-height:44px;border:0;background:transparent;color:#fff;font:32px/1 sans-serif}
.photo-viewer-status{margin:0;text-align:center;font-size:14px}.photo-viewer-status:not(:empty){padding-top:10px}
.history-photos a{cursor:zoom-in}
@keyframes photo-fade-in{from{opacity:0}to{opacity:1}}
@media(max-width:640px){.photo-viewer{padding:12px}.photo-viewer-panel{padding-inline:10px}.photo-viewer img{max-height:calc(100dvh - 150px)}}
@media(prefers-reduced-motion:reduce){.photo-viewer[open],.photo-viewer::backdrop{animation:none}}

/* 安全への取り組み */
.safety-body{color:#666;font-size:16px;line-height:1.7}
.safety-section{display:flow-root;margin-bottom:24px}
.safety-body h2{font-size:19px;font-weight:bold;color:#222;margin:12px 0 18px}
.safety-body p{margin:0 0 16px}
.safety-principles{display:flex;flex-wrap:wrap;gap:8px 28px;list-style:circle;padding-left:80px;margin:0 0 18px;font-weight:bold}
.safety-half{float:left;width:calc(50% - 10px);margin-right:20px}
.safety-half+.safety-half{margin-right:0}
.safety-half p{margin:0}
.safety-photo{display:block;cursor:zoom-in}
.safety-photo img{width:100%;height:auto;display:block}
@media(max-width:640px){.safety-body{font-size:14px}.safety-principles{padding-left:24px;gap:8px 26px}.safety-half{float:none;width:100%;margin:0 0 16px}.safety-section{margin-bottom:24px}.safety-body h2{margin-top:6px}.safety-half:last-child{margin-bottom:0}}

/* グループ企業紹介 */
.group-directory{margin:28px 0 0;color:#666;font-size:16px;line-height:1.7}
.group-entry{display:grid;grid-template-columns:27% minmax(0,1fr);border-bottom:1px dotted #ccc;padding:11px 0;align-items:center}
.group-entry dt{margin:0;padding-right:20px;font-weight:normal}
.group-entry dt a{color:#111;border-bottom:1px dashed #aaa;padding-bottom:3px}
.group-entry dt a:hover{color:var(--blue);text-decoration:none;border-bottom-color:var(--blue)}
.group-entry dt span[aria-hidden]{font-size:13px}
.group-entry dd{margin:0;overflow-wrap:anywhere}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
@media(max-width:960px){.group-directory{font-size:14px}.group-entry{grid-template-columns:32% minmax(0,1fr)}.group-entry dt{padding-right:16px}}
@media(max-width:640px){.group-directory{margin-top:0}.group-entry{display:block;padding:20px 0}.group-entry:first-child{padding-top:6px}.group-entry dt{padding:0;margin-bottom:10px;font-weight:bold}}

/* プライバシーポリシー */
.policy-body{color:#666;font-size:16px;line-height:1.85;overflow-wrap:anywhere}
.policy-body>p:first-child{margin-top:12px}
.policy-body p{margin:0 0 18px}
.policy-body h2{font-size:19px;font-weight:bold;color:#222;margin:30px 0 16px}
.policy-body ol{list-style:decimal;margin:0 0 20px;padding-left:1.8em}
.policy-body li{margin:8px 0;padding-left:3px}
@media(max-width:640px){.policy-body{font-size:14px}.policy-body>p:first-child{margin-top:0}.policy-body h2{font-size:18px;margin-top:26px}}

/* 業務案内 */
.business-body{color:#666;font-size:16px;line-height:1.7}
.business-photo{display:block;cursor:zoom-in}
.business-photo img{display:block;width:100%;height:auto}
.business-intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin-top:36px;align-items:start}
.business-intro p{margin:0}
.business-departments{border:10px solid #666;margin-top:44px;padding:20px 30px;color:#111}
.business-departments ul{display:flex;flex-wrap:wrap;gap:12px 40px;list-style:disc;padding-left:20px}
.business-departments li::marker{color:#666}
@media(max-width:640px){.business-body{font-size:14px}.business-intro{grid-template-columns:1fr;gap:20px;margin-top:24px}.business-departments{border-width:7px;padding:12px 18px;margin-top:28px}.business-departments ul{display:block}.business-departments a{display:block;padding:8px 0}}

.business-intro-text-only{grid-template-columns:1fr}

/* 部門別業務案内 */
.department-body{color:#666;font-size:16px;line-height:1.7}
.department-step{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start;margin-bottom:24px}
.department-step:last-child{margin-bottom:0}
.department-photo{display:block;cursor:zoom-in}
.department-photo img{display:block;width:100%;height:auto}
.department-step h2{font-size:19px;font-weight:bold;color:#222;margin:18px 0}
.department-step p{margin:0}
.department-step-text-only{grid-template-columns:1fr}
@media(max-width:640px){.department-body{font-size:14px}.department-step{grid-template-columns:1fr;gap:0;margin-bottom:32px}.department-step h2{font-size:18px;margin:18px 0 14px}}