/* Layout: 工場の図面のような硬いグリッド＋大判写真。白地・墨・コーナーポストの朱。単一ライトテーマ（意図的） */
:root{
  --ink:#15191c; --ink2:#3b4349; --mute:#5f686e; --line:#dde1e0; --mist:#f1f3f2; --paper:#ffffff;
  --accent:#d9481c; --accent-ink:#b43a14; --accent-soft:#fbe9e2; --night:#0f1315;
  --f-display:'Zen Kaku Gothic New','Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;
  --f-body:'Noto Sans JP','Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;
  --f-num:'Oswald','Arial Narrow',sans-serif;
  --wrap:1180px; color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.85;-webkit-text-size-adjust:100%}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;line-height:1.4;margin:0}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:24px}
.num{font-family:var(--f-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.eyebrow{font-family:var(--f-num);font-size:13px;letter-spacing:.22em;color:var(--accent-ink);text-transform:uppercase;font-weight:500}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* header */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{text-decoration:none;display:flex;flex-direction:column;line-height:1.2}
.brand b{font-family:var(--f-num);font-size:24px;letter-spacing:.06em;font-weight:600}
.brand b i{font-style:normal;color:var(--accent)}
.brand small{font-size:11px;color:var(--mute);letter-spacing:.08em}
.site-nav{display:flex;gap:22px;margin-left:auto;font-size:14px;font-weight:700}
.site-nav a{text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.site-nav a:hover,.site-nav a[aria-current=page]{border-color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 26px;border-radius:2px;font-weight:700;font-size:15px;text-decoration:none;border:2px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;font-family:var(--f-body)}
.btn:hover{background:#000}
.btn.accent{background:var(--accent);border-color:var(--accent)}
.btn.accent:hover{background:var(--accent-ink);border-color:var(--accent-ink)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.ghost-light{background:transparent;color:#fff;border-color:#fff}
.btn.ghost-light:hover{background:#fff;color:var(--ink)}
.head-cta{min-height:42px;padding:8px 18px;font-size:14px}
@media(max-width:980px){.site-nav{display:none}.head-cta{margin-left:auto}}

/* hero */
.hero{position:relative;color:#fff;background:var(--night);overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,19,21,.92) 0%,rgba(15,19,21,.6) 55%,rgba(15,19,21,.15) 100%)}
.hero .wrap{position:relative;z-index:1;padding-block:96px 0}
.hero h1{font-size:clamp(30px,4.6vw,58px);font-weight:900;letter-spacing:.02em;line-height:1.3;margin-top:18px}
.hero h1 em{font-style:normal;color:#ffb59b}
.hero .lede{margin-top:24px;max-width:34em;font-size:17px;color:#e3e8ea}
.hero .eyebrow{color:#ffb59b}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:72px;border-top:1px solid rgba(255,255,255,.22)}
.stats div{padding:22px 20px 26px;border-right:1px solid rgba(255,255,255,.22)}
.stats div:last-child{border-right:0}
.stats .num{display:block;font-size:44px;font-weight:600;line-height:1.1;color:#fff}
.stats .num small{font-size:18px;margin-left:4px;font-family:var(--f-body);font-weight:700}
.stats span{font-size:13px;color:#c6cfd3}
.stats .num span{font-size:inherit;color:inherit}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.stats div:nth-child(2){border-right:0}.stats div:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.22)}.hero .wrap{padding-top:64px}.stats .num{font-size:34px}}

/* sections */
.sec{padding-block:96px}
.sec.mist{background:var(--mist)}
.sec.dark{background:var(--night);color:#fff}
.sec-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:16px 40px;margin-bottom:44px}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);font-weight:900;margin-top:10px}
.sec-head p{color:var(--mute);max-width:36em}
.sec.dark .sec-head p{color:#c6cfd3}
.sec.dark .eyebrow{color:#ffb59b}
@media(max-width:760px){.sec{padding-block:64px}}

/* works */
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}
@media(max-width:900px){.tiles{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.tile .cap{padding:20px 8px 6px}.tile .cap b{font-size:12px}.tile .cap span{display:none}.tile .tag{font-size:10px;padding:1px 6px}}
.tile{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#222;text-decoration:none;color:#fff}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.tile:hover img{transform:scale(1.05)}
.tile .cap{position:absolute;left:0;right:0;bottom:0;padding:26px 12px 9px;background:linear-gradient(transparent,rgba(0,0,0,.82));font-size:13px;line-height:1.45}
.tile .cap b{display:block;font-size:14px}
.tile .cap span{color:#d8dee1;font-size:12px}
.tile .tag{position:absolute;top:8px;left:8px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:2px}
.namewall{margin-top:40px;padding:28px;background:var(--paper);border:1px solid var(--line)}
.namewall h3{font-size:16px;margin-bottom:14px}
.namewall ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13px;color:var(--ink2)}
.namewall li{white-space:nowrap}
.namewall li::before{content:"";display:inline-block;width:6px;height:6px;background:var(--accent);margin-right:7px;vertical-align:2px}
.center{text-align:center}
.mt{margin-top:36px}

/* worries */
.qa{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.qa article{background:var(--paper);border:1px solid var(--line);padding:26px;display:flex;flex-direction:column;gap:14px}
.qa .q{font-weight:700;font-size:16px;line-height:1.6;padding-left:30px;position:relative}
.qa .q::before{content:"Q";position:absolute;left:0;top:-2px;font-family:var(--f-num);font-size:22px;color:var(--mute)}
.qa .a{font-size:14.5px;color:var(--ink2);padding:14px 0 0 30px;border-top:1px dashed var(--line);position:relative}
.qa .a::before{content:"A";position:absolute;left:0;top:10px;font-family:var(--f-num);font-size:22px;color:var(--accent)}
@media(max-width:900px){.qa{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.qa{grid-template-columns:1fr}}

/* reasons */
.reasons{display:grid;gap:56px}
.reason{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.reason:nth-child(even) .r-img{order:2}
.reason .r-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.reason .r-num{font-family:var(--f-num);font-size:64px;line-height:1;color:var(--accent);font-weight:600}
.reason h3{font-size:clamp(22px,2.6vw,30px);font-weight:900;margin:10px 0 16px}
.reason p{color:var(--ink2)}
@media(max-width:820px){.reason{grid-template-columns:1fr;gap:20px}.reason:nth-child(even) .r-img{order:0}}

/* services */
.svc{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.svc a{display:flex;flex-direction:column;text-decoration:none;background:var(--paper);border:1px solid var(--line)}
.svc a:hover{border-color:var(--ink)}
.svc img{aspect-ratio:4/3;object-fit:cover;width:100%;background:var(--mist)}
.svc .body{padding:20px 20px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.svc h3{font-size:18px}
.svc p{font-size:14px;color:var(--ink2)}
.svc .price{margin-top:auto;padding-top:10px;font-size:13px;color:var(--accent-ink);font-weight:700}
.svc .more{font-size:13px;font-weight:700}
@media(max-width:980px){.svc{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.svc{grid-template-columns:1fr}}
.consult-band{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:24px 28px;background:var(--ink);color:#fff}
.consult-band p{font-size:15px}
.consult-band b{font-size:18px;display:block}

/* flow */
.flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;counter-reset:f}
.flow li{list-style:none;padding:28px 28px 30px;border-left:1px solid var(--line);position:relative}
.flow li:first-child{border-left:0}
.flow .step{font-family:var(--f-num);font-size:13px;letter-spacing:.2em;color:var(--accent-ink)}
.flow h3{font-size:19px;margin:6px 0 10px}
.flow p{font-size:14.5px;color:var(--ink2)}
.flow-wrap{padding:0;margin:0;border:1px solid var(--line);background:var(--paper)}
@media(max-width:760px){.flow{grid-template-columns:1fr}.flow li{border-left:0;border-top:1px solid var(--line)}.flow li:first-child{border-top:0}}
.showroom{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:28px;background:var(--paper);border:1px solid var(--line)}
.showroom img{width:100%;height:100%;object-fit:cover;min-height:260px}
.showroom div{padding:36px}
.showroom h3{font-size:22px;margin-bottom:12px}
.showroom p{color:var(--ink2);font-size:15px}
@media(max-width:760px){.showroom{grid-template-columns:1fr}.showroom div{padding:24px}}

/* profile */
.profile{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start}
.profile img{width:100%;max-width:280px}
.profile .role{font-size:13px;color:#c6cfd3}
.profile h3{font-size:26px;margin:4px 0 18px}
.profile p{color:#dde3e6;margin-bottom:14px;max-width:40em}
.profile blockquote{margin:22px 0 0;padding:18px 22px;border-left:3px solid var(--accent);background:rgba(255,255,255,.06);font-size:17px;font-weight:700}
@media(max-width:760px){.profile{grid-template-columns:1fr}.profile img{max-width:200px}}

/* faq */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:20px 4px}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-num);font-size:22px;color:var(--accent);line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:12px;color:var(--ink2);font-size:15px}

/* contact */
.contact{background:var(--accent);color:#fff;padding-block:72px}
.contact .wrap{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.contact h2{font-size:clamp(26px,3.4vw,38px);font-weight:900}
.contact p{margin-top:12px;color:#fff3ee}
.contact .box{background:#fff;color:var(--ink);padding:28px;display:flex;flex-direction:column;gap:12px}
.contact .tel{font-family:var(--f-num);font-size:34px;font-weight:600;letter-spacing:.04em;user-select:all}
.contact .box small{color:var(--mute);font-size:13px}
@media(max-width:820px){.contact .wrap{grid-template-columns:1fr}}

/* footer */
.site-foot{background:var(--night);color:#aeb8bd;font-size:13px;padding-block:44px}
.site-foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.site-foot b{color:#fff;font-size:15px}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.site-foot a{text-decoration:none}
.site-foot a:hover{color:#fff}

/* page head (sub pages) */
.page-head{background:var(--night);color:#fff;position:relative;overflow:hidden}
.page-head>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.35}
.page-head .wrap{position:relative;padding-block:72px 64px}
.page-head .eyebrow{color:#ffb59b}
.page-head h1{font-size:clamp(30px,4.4vw,52px);font-weight:900;margin-top:12px}
.page-head p{margin-top:16px;max-width:38em;color:#dfe5e8}
.crumbs{font-size:12px;color:#aeb8bd;margin-bottom:18px}
.crumbs a{text-decoration:none}

/* works page */
.filters{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:26px}
.chip{min-height:40px;padding:6px 16px;border:1px solid var(--line);background:var(--paper);border-radius:2px;font-size:14px;font-weight:700;cursor:pointer;font-family:var(--f-body);color:var(--ink)}
.chip[aria-pressed=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.filters select{min-height:40px;padding:6px 12px;border:1px solid var(--line);font-size:14px;font-family:var(--f-body);background:var(--paper);color:var(--ink)}
.filters .count{margin-left:auto;font-size:14px;color:var(--mute)}
.filters .count b{font-family:var(--f-num);font-size:24px;color:var(--ink);margin-right:2px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}
.card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);text-decoration:none;color:inherit}
.card img{aspect-ratio:16/10;object-fit:cover;width:100%;background:var(--mist)}
.card .body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .meta{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--mute)}
.card .meta .cat{background:var(--accent-soft);color:var(--accent-ink);font-weight:700;padding:1px 8px}
.card h3{font-size:16px;font-family:var(--f-body);font-weight:700;line-height:1.5}
.card .spec{font-size:13px;font-weight:700;color:var(--ink2)}
.card p{font-size:13.5px;color:var(--ink2);line-height:1.75}
.card .detail{margin-top:auto;padding-top:8px;font-size:13px;font-weight:700;color:var(--accent-ink)}
a.card:hover{border-color:var(--ink)}

/* content blocks */
.prose{max-width:760px}
.prose h2{font-size:26px;font-weight:900;margin:56px 0 16px}
.prose h3{font-size:19px;margin:32px 0 10px}
.prose p{margin-bottom:14px;color:var(--ink2)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media(max-width:820px){.grid2,.grid3{grid-template-columns:1fr}}
.panel{background:var(--paper);border:1px solid var(--line);padding:26px}
.panel h3{font-size:18px;margin-bottom:10px}
.panel p,.panel li{font-size:14.5px;color:var(--ink2)}
.panel img{width:100%;aspect-ratio:4/3;object-fit:cover;margin-bottom:16px;background:var(--mist)}
.panel img.contain{object-fit:contain;background:#fff}
.check{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.check li{padding-left:26px;position:relative}
.check li::before{content:"";position:absolute;left:2px;top:.7em;width:12px;height:7px;border-left:3px solid var(--accent);border-bottom:3px solid var(--accent);transform:rotate(-45deg)}
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;background:var(--paper)}
.spec-table th,.spec-table td{border:1px solid var(--line);padding:14px 16px;text-align:left;vertical-align:top}
.spec-table th{width:28%;background:var(--mist);font-weight:700}
.table-box{overflow-x:auto}
.price-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.price-card{border:2px solid var(--ink);padding:26px;background:var(--paper)}
.price-card .label{font-size:13px;font-weight:700;color:var(--mute)}
.price-card .p{font-family:var(--f-num);font-size:48px;font-weight:600;line-height:1.1;margin:6px 0}
.price-card .p small{font-size:18px;font-family:var(--f-body);font-weight:700}
.price-card p{font-size:14px;color:var(--ink2)}
@media(max-width:620px){.price-row{grid-template-columns:1fr}}
.note{font-size:13px;color:var(--mute);margin-top:14px}
.risk{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.risk div{border-top:3px solid var(--accent);padding-top:16px}
.risk h3{font-size:17px;margin-bottom:8px}
.risk p{font-size:14px;color:#c6cfd3}
@media(max-width:760px){.risk{grid-template-columns:1fr}}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.gallery img{width:100%;aspect-ratio:16/10;object-fit:cover}
.gallery img:first-child{grid-column:1/-1;aspect-ratio:16/8}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.tile img{transition:none}}

@media(max-width:600px){.hero h1{font-size:27px}.page-head h1{font-size:28px}}
.nw{display:inline-block}

/* column */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article-body{max-width:760px;font-size:16.5px}
.article-body figure{margin:0 0 32px}
.article-body figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body figcaption{font-size:12px;color:var(--mute);margin-top:6px}
.article-body p{margin:0 0 18px;color:var(--ink2)}
.article-body h2{font-size:clamp(21px,2.4vw,26px);font-weight:900;margin:52px 0 18px;padding:0 0 12px;border-bottom:3px solid var(--ink)}
.article-body h3{font-size:19px;margin:34px 0 12px;padding-left:12px;border-left:4px solid var(--accent)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em;color:var(--ink2)}
.article-body li{margin-bottom:6px}
.article-body a{color:var(--accent-ink);font-weight:700}
.article-body .table-box{margin:0 0 22px}
.article-body .spec-table th{width:auto}
.article-cta{margin-top:44px;padding:26px;background:var(--mist);border:1px solid var(--line);display:flex;flex-direction:column;gap:16px}
.article-cta div{display:flex;flex-wrap:wrap;gap:10px}
.article-cta a{color:inherit}
.article-cta .btn.accent{color:#fff}
.article-side{position:sticky;top:96px}
.article-side h2{font-size:18px;margin:6px 0 14px}
.side-list{display:grid;gap:14px}
.side-list .card p,.side-list .card .detail{display:none}
.side-list .card h3{font-size:14px}
.article-head h1{font-size:clamp(24px,3.4vw,38px);max-width:24em}
@media(max-width:960px){.article-layout{grid-template-columns:1fr}.article-side{position:static}.side-list{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}}

.topics details summary{align-items:flex-start;gap:14px}
.topics .cat-label{flex-shrink:0;font-size:12px;font-weight:700;color:var(--accent-ink);background:var(--accent-soft);padding:2px 8px;margin-right:10px}
.topics details h3{font-size:16px;margin:18px 0 6px}
.topics details p{margin-top:4px}