@charset "UTF-8";
:root{--red:#cf3828;--red2:#ed634e;--ink:#222321;--muted:#666760;--paper:#fff;--soft:#f5f3ef;--line:#dedbd5;--serif:"Noto Serif JP",serif;--sans:"Noto Sans JP",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}html,body{margin:0;overflow-x:clip}body{font-family:var(--sans);color:var(--ink);line-height:1.85;background:var(--paper)}img{height:auto;max-width:100%;display:block}a{color:inherit}.sample-note{background:#222;color:#fff;text-align:center;font-size:12px;padding:6px 12px;letter-spacing:.03em}.header{max-width:1280px;margin:auto;min-height:94px;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:800;letter-spacing:.06em;font-size:20px}.brand-mark{width:44px;height:44px;background:var(--red);display:grid;place-items:center;color:white;font-family:var(--serif);font-size:22px;clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%)}.nav{display:flex;align-items:center;gap:4px}.nav a,.header-contact{min-height:44px;padding:9px 12px;text-decoration:none;font-size:13px;border-left:1px solid var(--line)}.nav a[aria-current=page]{color:var(--red);font-weight:700}.header-actions{display:flex;gap:8px;align-items:center}.pill{display:inline-flex;min-height:48px;padding:10px 22px;align-items:center;justify-content:center;text-decoration:none;border:1px solid var(--red);border-radius:999px;font-weight:700;transition:.18s}.pill.primary{background:var(--red);color:white}.pill:hover{transform:translateY(-2px);box-shadow:0 5px 16px #0002}.menu-toggle{display:none;border:0;background:var(--red2);color:#fff;border-radius:4px;width:54px;height:54px;font-size:24px}.hero{max-width:1280px;margin:0 auto 0 4.6%;min-height:570px;position:relative;display:flex;align-items:end;background:#333 url('img/39.jpg') center 46%/cover no-repeat;border-bottom:12px solid var(--red);box-shadow:-58px 20px 0 -8px var(--red);color:white}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#101010bb 0%,#10101060 52%,#10101008 100%),linear-gradient(0deg,#1010107a,transparent 65%)}.hero-content{position:relative;max-width:760px;padding:60px 7% 62px}.eyebrow{color:var(--red);font-weight:700;letter-spacing:.18em;font-size:12px;text-transform:uppercase}.hero .eyebrow{color:#ffc0ae}.hero h1,.page-hero h1{font-family:var(--serif);font-weight:500;letter-spacing:.03em;font-size:clamp(32px,5vw,58px);line-height:1.45;margin:12px 0 14px;word-break:keep-all;overflow-wrap:anywhere}.hero p{max-width:620px;margin:0 0 24px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero-actions .pill:not(.primary){color:white;border-color:#ffffffb0;background:#17171745}.section{padding:90px 24px}.section.soft{background:var(--soft)}.wrap{max-width:1120px;margin:auto}.section-head{text-align:center;margin:0 auto 42px;max-width:740px}.section-head h2{font:500 clamp(26px,3vw,38px)/1.55 var(--serif);margin:6px 0 12px;word-break:keep-all;overflow-wrap:anywhere}.section-head p{color:var(--muted);margin:0}.feature-grid,.photo-grid,.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(min(250px,100%),1fr));gap:20px}.feature,.photo-card{background:white;border:1px solid var(--line)}.feature{padding:26px}.feature .num{font:italic 32px var(--serif);color:var(--red)}.feature h3{font-size:19px;margin:4px 0 8px}.feature p{margin:0;color:var(--muted);font-size:14px}.split{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}.split img{width:100%;height:390px;object-fit:cover}.split h2{font:500 clamp(27px,3vw,39px)/1.55 var(--serif);margin:8px 0 14px;word-break:keep-all;overflow-wrap:anywhere}.split p{color:var(--muted)}.section-link{display:inline-flex;min-height:48px;align-items:center;color:var(--red);font-weight:700;text-decoration:none;border-bottom:1px solid var(--red)}.photo-card img{width:100%;height:240px;object-fit:cover}.photo-card div{padding:17px 18px}.photo-card h3{margin:0;font-size:17px}.photo-card p{margin:5px 0 0;color:var(--muted);font-size:13px}.page-hero{min-height:320px;display:flex;align-items:end;padding:40px max(7%,calc((100% - 1120px)/2));background:linear-gradient(90deg,#111d,#1114),url('img/40.jpg') center/cover;color:white;border-bottom:10px solid var(--red)}.page-hero .eyebrow{color:#ffb9a8}.page-hero h1{font-size:clamp(34px,5vw,54px);margin:4px 0}.page-hero p{margin:0 0 15px}.crumb{max-width:1120px;margin:10px auto;padding:0 24px;font-size:12px;color:var(--muted)}.crumb a{min-height:44px;display:inline-flex;align-items:center}.stat{background:white;border-top:3px solid var(--red);padding:20px}.stat strong{display:block;font:500 20px var(--serif)}.stat span{font-size:13px;color:var(--muted)}.steps{counter-reset:item;display:grid;gap:12px}.step{counter-increment:item;padding:20px 22px;background:white;border-left:3px solid var(--red)}.step h3{margin:0 0 4px}.step p{margin:0;color:var(--muted)}.contact-band{background:var(--red);color:white;padding:55px 24px;text-align:center}.contact-band h2{font:500 30px var(--serif);margin:0 0 8px}.contact-band p{margin:0 0 20px}.contact-band .pill{background:white;color:var(--red);border-color:white}.company-table{width:100%;border-collapse:collapse;background:white}.company-table th,.company-table td{text-align:left;padding:18px;border-bottom:1px solid var(--line);vertical-align:top}.company-table th{width:190px;background:#f8f6f2}.map-box{height:270px;background:#e8e8e8;display:grid;place-items:center;color:#777;font-weight:700}.footer{padding:36px 24px 80px;background:#242523;color:white}.footer-inner{max-width:1120px;margin:auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.footer nav{display:flex;gap:14px;flex-wrap:wrap}.footer nav a{min-height:44px;display:inline-flex;align-items:center;font-size:13px}.footer small{color:#c5c5c1}.mobile-bar{display:none}.form-demo{max-width:740px;margin:auto;padding:24px;background:#fff;border:1px solid var(--line)}.form-demo label{display:block;font-weight:700;margin:16px 0 6px}.form-demo input,.form-demo textarea,.form-demo select{width:100%;padding:12px;border:1px solid #aaa;font:inherit;border-radius:3px}.form-demo textarea{min-height:130px}.form-demo button{margin-top:18px;cursor:pointer}.notice{padding:12px;background:#fff2d8;border-left:3px solid #db9c20;font-size:13px}
@media(max-width:900px){.header{min-height:76px;padding:10px 16px}.menu-toggle{display:block;flex:0 0 auto}.header-actions{margin-left:auto}.header-actions .pill{display:none}.nav{display:none;position:absolute;z-index:5;left:0;right:0;top:calc(100% - 1px);padding:12px 16px 18px;background:white;box-shadow:0 12px 18px #0002;flex-direction:column;align-items:stretch}.header{position:relative}.nav.open{display:flex}.nav a{border-left:0;border-bottom:1px solid var(--line)}.hero{margin-left:20px;min-height:540px;box-shadow:-20px 16px 0 -8px var(--red)}.split{gap:28px}.section{padding:70px 22px}}
@media(max-width:600px){.sample-note{font-size:10px;padding:6px}.brand{font-size:16px;gap:8px}.brand-mark{width:38px;height:38px}.hero{min-height:590px;margin-left:10px;background-position:57% center;box-shadow:-10px 12px 0 -6px var(--red);border-bottom-width:8px}.hero-content{padding:38px 22px 42px}.hero h1{font-size:clamp(31px,9vw,44px);line-height:1.55}.hero p{font-size:14px}.hero-actions .pill{flex:1 1 145px;padding:8px 12px}.section{padding:60px 18px}.feature-grid,.photo-grid,.stat-grid{grid-template-columns:1fr;gap:14px}.feature-grid{grid-template-columns:1fr}.split{grid-template-columns:1fr;gap:24px}.split img{height:260px}.photo-card img{height:230px}.page-hero{min-height:280px;padding:32px 22px;background-position:55% center}.page-hero h1{font-size:36px}.section-head{text-align:left;margin-bottom:26px}.section-head .eyebrow{text-align:left}.section-head h2{font-size:27px}.company-table,.company-table tbody,.company-table tr,.company-table th,.company-table td{display:block;width:100%}.company-table th{padding:10px 14px 2px;border:0}.company-table td{padding:4px 14px 14px}.map-box{height:210px}.contact-band{padding:42px 18px}.contact-band h2{font-size:26px}.footer{padding-bottom:92px}.mobile-bar{display:grid;grid-template-columns:1fr 1fr;position:fixed;z-index:10;bottom:0;left:0;right:0;background:white;padding:8px;gap:8px;box-shadow:0 -4px 18px #0002}.mobile-bar a{min-height:48px;border-radius:3px;background:var(--red);color:#fff;text-align:center;text-decoration:none;display:grid;place-items:center;font-weight:700;font-size:14px}.mobile-bar a:last-child{background:#292a27}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
/* 日本語の改行を文節で（Claudeの手直し） */
h1,h2,h3,h4{word-break:auto-phrase!important;text-wrap:balance}
p,dd,li,summary{text-wrap:pretty}
img{height:auto}
.site-header a:first-child,header .logo,header .brand{min-height:44px}
@media(max-width:768px){.hero-actions{display:none}}
@media(min-width:901px){.hero{max-width:1720px;margin-left:max(4.6%,calc((100% - 1720px)/2 + 25px));margin-right:max(calc(4.6% - 50px),calc((100% - 1720px)/2 - 25px))}.hero-content{max-width:none;--pad:max(7%,calc((100vw - 1280px)/2 + 20px - max(4.6vw,(100vw - 1720px)/2 + 25px)));padding-left:var(--pad);width:min(100%,calc(var(--pad) + 760px))}}
.hero-smoke,.hero-video{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.hero-smoke{z-index:0}.hero-video{object-fit:cover;object-position:center 46%}
@media(prefers-reduced-motion:reduce){.hero-smoke,.hero-video,.hero-fluid{display:none}}
.hero:before{z-index:1}.hero-content{z-index:2}
/* 赤い四角を写真の左下にずらして重ねる（右端・下端を写真とそろえない） */
.hero{border-bottom:0;box-shadow:-50px 24px 0 0 var(--red)}@media(max-width:900px){.hero{box-shadow:-20px 16px 0 0 var(--red)}}@media(max-width:600px){.hero{box-shadow:-10px 10px 0 0 var(--red)}}
/* パソコン：写真を1.16倍にして左端に合わせ、煙の右端をお問い合わせボタンのあたりに置く（左に余白を出さない） */
@media(min-width:901px){.hero{background-size:116% auto;background-position:0 46%}}
/* 案Bの動画：写真と同じ置き方（幅116%・左合わせ・縦46%）。読み込めたら表示する */
@media(min-width:901px){.hero{overflow:hidden}.hero-video{inset:auto;left:0;top:46%;width:116%;height:auto;transform:translateY(-46%);object-fit:fill}}.hero-video{opacity:0;transition:opacity .6s}.hero-video.is-ready{opacity:1}@media(max-width:600px){.hero-video{object-position:57% 50%}}
/* 案Cの物理演算の煙（パソコンだけ。動いたら煙を消した写真に替える） */
.hero-fluid{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0}
.hero.is-fluid{background-image:url(img/39-nosmoke.jpg)}
/* 案Cだけ：写真を1.3倍にして、溶接している手元を文字の右側に置く（煙の出どころは fluid.js がこの位置から計算する） */
@media(min-width:901px){.hero--weld{background-size:130% auto;background-position:32% 86%}}
.hero-sparks{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}