:root{--ink:#182b40;--blue:#174c8c;--navy:#123252;--muted:#526071;--line:#d4dbe2;--paper:#f2f4f6;--white:#fff;--serif:"Yu Mincho","Hiragino Mincho ProN",serif;--sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--ink);background:var(--white);font:14px/1.9 var(--sans)}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img{display:block;max-width:100%;object-fit:cover}h1,h2,h3,p,figure{margin:0}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #c45d0e;outline-offset:6px}.skip{position:fixed;top:-100px;left:15px;z-index:20;background:white;padding:10px}.skip:focus{top:10px}.container{width:84%;max-width:1200px;margin-inline:auto}.section{padding-block:115px}.sample-note{padding:5px 4%;display:flex;justify-content:space-between;background:var(--paper);font-size:10px;letter-spacing:.08em;color:var(--muted)}.header{height:95px;padding-left:4%;display:flex;justify-content:space-between;align-items:center;background:white;position:sticky;top:0;z-index:5;box-shadow:0 1px 0 #172d411a}.brand{display:flex;align-items:center;gap:13px;flex-shrink:0}.brand-name{font-size:17px;letter-spacing:.06em;font-weight:700;line-height:1.5}.brand-name small{font:10px/1.8 Arial,sans-serif;letter-spacing:.14em;display:block}nav{display:flex;height:100%;align-items:center;gap:27px;font-size:12px;font-weight:600}nav a{transition:color .15s}nav a:hover{color:var(--blue)}nav .nav-contact{align-self:stretch;display:flex;gap:25px;align-items:center;padding:0 30px;background:var(--blue);color:white}.nav-contact:hover{background:var(--navy);color:white}.menu-button{display:none}.hero{height:640px;max-height:850px;min-height:520px;position:relative;background:#21384b;color:white;overflow:hidden}.hero-photo{position:absolute;inset:0;width:100%;height:100%;object-position:50% 50%}.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,23,41,.78),rgba(7,23,41,.30) 72%,rgba(7,23,41,.14))}.hero-content{position:relative;width:84%;max-width:1200px;margin:auto;padding-top:130px}.hero-kicker{font-size:13px;letter-spacing:.18em;margin-bottom:27px}.hero h1{font:500 clamp(38px,4.5vw,66px)/1.6 var(--serif);letter-spacing:.06em}.hero-description{margin-top:24px;font-size:14px;line-height:2.2;letter-spacing:.07em}.hero-link{display:inline-flex;gap:60px;align-items:center;border-bottom:1px solid #ffffffa6;padding:12px 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0;align-items:center}summary::-webkit-details-marker{display:none}summary:hover .service-title{color:var(--blue)}.service-number{font:12px Arial,sans-serif;color:var(--blue)}.service-title{font-size:23px;font-weight:500;line-height:1.6}.service-title small{display:block;font:9px/1.8 Arial,sans-serif;color:var(--muted);letter-spacing:.12em}.service-short{font-size:13px;color:var(--muted)}.toggle{width:22px;height:22px;position:relative}.toggle:before,.toggle:after{content:"";width:16px;height:1px;background:var(--blue);position:absolute;top:10px;left:3px}.toggle:after{transform:rotate(90deg)}details[open] .toggle:after{display:none}.service-content{margin-left:68px;padding:0 45px 32px 0;display:grid;grid-template-columns:1.4fr 1fr;gap:50px;font-size:13px;line-height:2}.service-content ul{margin:0;padding-left:20px;color:var(--muted)}.service-note{font-size:11px;color:var(--muted);margin-top:20px}.news-section{display:grid;grid-template-columns:1fr 1.6fr;gap:80px}.news-section h2{font-size:29px}.news-section .label{margin-bottom:25px}.news-list{border-top:1px solid var(--line)}.news-list article{padding:26px 0;border-bottom:1px solid var(--line)}.news-meta{display:flex;gap:25px;align-items:center;font-size:10px;color:var(--muted);margin-bottom:17px}.news-meta time{font:12px Arial,sans-serif}.news-list h3{font-size:14px;font-weight:600;margin-bottom:14px}.news-list p{font-size:12px;color:var(--muted)}.company-section{padding-block:65px;border-top:1px solid var(--line)}.company-inner{display:grid;grid-template-columns:1fr 1.25fr;gap:80px;align-items:start}.company-inner h2{font-size:23px;font-family:var(--sans);font-weight:600}.company-inner .label{margin-bottom:20px}.company-inner p:not(.label){font-size:12px;color:var(--muted);margin-top:14px}.company-inner dl{margin:0}.company-inner dl div{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);font-size:12px}.company-inner dl div:first-child{padding-top:0}.company-inner dt{color:var(--muted)}.company-inner dd{margin:0}.contact{background:var(--navy);color:white;padding-block:75px}.contact-inner{display:flex;align-items:center;justify-content:space-between;gap:50px}.contact .label{color:white;margin-bottom:18px}.contact .label span{color:#c9d8e8}.contact h2{font-size:34px}.contact-button{background:white;color:var(--navy);border:1px solid white;display:flex;gap:65px;justify-content:space-between;align-items:center;padding:23px 28px;font-size:13px;width:100%;min-height:68px}.contact-button:hover{background:#e6edf5}.contact-action>p{font-size:10px;color:#d3dfeb;margin-top:16px}footer{padding-block:50px 25px}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:20px}.back-top{font:10px Arial,sans-serif;letter-spacing:.08em;padding:16px 0}.footer-bottom{border-top:1px solid var(--line);padding-top:22px;margin-top:35px;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}.footer-bottom a{text-decoration:underline;text-underline-offset:3px}.photo-note{font-size:10px;color:var(--muted);margin-top:8px}dialog{border:0;width:min(480px,calc(100% - 40px));padding:35px;color:var(--ink);background:white}dialog::backdrop{background:#122a43b3}dialog h2{font-family:var(--sans);font-size:21px;font-weight:600}dialog p{margin:20px 0;font-size:14px}.close-button{border:1px solid var(--blue);background:white;color:var(--blue);padding:10px 30px}
/* リンクのhover: ロゴ=画像リンクなのでopacity、テキストリンク=色変化、暗い背景=下線 */.brand{transition:opacity .15s}.brand:hover{opacity:.7}.back-top,.footer-bottom a{transition:color .15s}.back-top:hover,.footer-bottom a:hover{color:var(--blue)}.hero-bottom a:hover{text-decoration:underline;text-underline-offset:4px}
@media(min-width:1500px){.hero{height:720px}.hero-content{padding-top:155px}}
@media(max-width:1100px){.header{height:80px}.brand-name{font-size:14px}nav{gap:20px;font-size:11px}nav .nav-contact{padding-inline:22px;gap:15px}.about{gap:45px}.about h2{font-size:32px}.about-photo img{height:390px}summary{grid-template-columns:35px 170px 1fr 25px}.service-content{margin-left:53px}.company-inner,.news-section{gap:45px}}
@media(max-width:850px){.header{height:76px;padding-inline:5%}.menu-button{display:flex;align-items:center;gap:12px;padding:14px 0;background:none;border:0;color:var(--ink);font-size:11px}.menu-lines{width:22px;height:10px;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}nav{display:none;position:absolute;top:76px;left:0;right:0;height:auto;background:white;padding:15px 5% 25px;box-shadow:0 2px 3px #0001}nav.open{display:flex;flex-direction:column;align-items:stretch;gap:0}nav>a{padding:14px 0;border-top:1px solid var(--line)}nav .nav-contact{margin-top:10px;padding:15px 20px;justify-content:space-between}.container{width:88%}.hero{height:590px}.hero-content{width:88%;padding-top:115px}.hero h1{font-size:44px}.hero-shade{background:rgba(7,23,41,.60)}.news-strip{margin-left:6%;grid-template-columns:85px 95px 1fr;gap:15px;padding-right:6%}.section{padding-block:80px}.about{gap:35px}.about h2{font-size:29px}.about-photo img{height:380px}.desktop-br{display:none}.about-photo figcaption{display:block}.about-photo small{display:block;margin-top:5px}h2{font-size:29px}.section-heading>p{font-size:12px}summary{grid-template-columns:30px 150px 1fr 20px;gap:12px}.service-content{margin-left:42px;gap:30px}.service-short{font-size:12px}.news-section{gap:35px}.news-section h2{font-size:26px}.company-inner{grid-template-columns:1fr;gap:30px}.company-inner dl div{grid-template-columns:120px 1fr}.contact-inner{gap:35px}.contact h2{font-size:28px}.contact-button{gap:30px;padding:20px}.footer-bottom{display:block}.footer-bottom p+p{margin-top:8px}}
@media(max-width:580px){html{scroll-padding-top:90px}.sample-note{font-size:8px;padding-inline:5%;letter-spacing:.03em}.sample-note>span{font-size:8px}.brand-name{font-size:12px}.brand-name small{font-size:8px}.brand{gap:10px}.header{height:70px}nav{top:70px}.menu-button{font-size:10px}.menu-lines{width:18px}.hero{height:560px;min-height:0}.hero-content{padding-top:95px}.hero-kicker{font-size:10px;margin-bottom:28px;letter-spacing:.12em}.hero h1{font-size:clamp(27px,7.3vw,39px);line-height:1.85;letter-spacing:.04em}.hero-description{font-size:11px;margin-top:27px;line-height:2.25;letter-spacing:0}.hero-link{font-size:11px;gap:50px;margin-top:20px}.hero-photo{object-position:51% center}.hero-bottom{font-size:8px;bottom:24px;left:6%;right:6%}.news-strip{grid-template-columns:70px 1fr;padding-block:20px;gap:9px;font-size:11px}.news-strip time{font-size:11px}.news-strip>a{grid-column:1/-1;line-height:1.8}.section{padding-block:65px}.about{grid-template-columns:1fr;gap:30px}.label{font-size:11px;margin-bottom:25px}.label span{font-size:9px;margin-left:14px}.about h2{font-size:29px;line-height:1.8;margin-bottom:25px}.about-copy>p:not(.label){font-size:12px;line-height:2.2}.about-photo{margin-top:0}.about-photo img{height:320px;object-position:center}.about-photo figcaption{display:flex;font-size:10px;align-items:center}.about-photo small{font-size:8px;margin:0}.text-link{font-size:11px}.section-heading{display:block;margin-bottom:30px}.section-heading h2{font-size:27px}.section-heading>p{margin-top:20px;font-size:12px}.service-title{font-size:21px}.service-short{display:none}summary{grid-template-columns:28px 1fr 20px;gap:12px;padding-block:24px}.service-content{margin-left:40px;display:block;padding:0 0 27px;font-size:12px}.service-content ul{margin-top:17px}.service-note{font-size:10px}.news-section{grid-template-columns:1fr;gap:25px}.news-section h2{font-size:26px}.news-section h2 br{display:none}.news-section .label{margin-bottom:18px}.news-list h3{font-size:13px}.news-list p{font-size:11px}.company-section{padding-block:50px}.company-inner h2{font-size:19px}.company-inner dl div{font-size:11px;grid-template-columns:70px 1fr;gap:15px}.contact{padding-block:50px}.contact-inner{display:block}.contact h2{font-size:28px}.contact-action{margin-top:30px}.contact-button{font-size:12px;min-height:65px}.contact-action>p{font-size:9px}.footer-top{align-items:center}.back-top{font-size:8px}.footer-bottom,.photo-note{font-size:9px}footer{padding-top:35px}.footer-bottom{margin-top:25px}.photo-note{line-height:1.8}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.brand-mark{width:64px;height:auto;flex-shrink:0;object-fit:contain}
@media(max-width:1100px){.brand-mark{width:55px}}
@media(max-width:580px){.brand-mark{width:46px}}