/* Service and editorial pages share the industrial identity and a quieter reading rhythm. */
.ed-service,.ed-index,.ed-reading{--ed-text:#cfceca;--ed-rule:rgba(238,236,230,.17);color:var(--fg,#efede8)}
.ed-service a,.ed-index a,.ed-reading a{-webkit-tap-highlight-color:transparent}
.ed-service a:focus-visible,.ed-index a:focus-visible,.ed-reading :is(a,summary,[tabindex]):focus-visible{outline:2px solid var(--gold,#c9ae75);outline-offset:6px}
.ed-service .ed-service-section{padding:100px var(--pad,6vw);border-top:1px solid var(--ed-rule)}
.ed-service .prod-detail{width:100%;max-width:1380px;margin:0 auto}
.ed-service .sec-label,.ed-index .sec-label{margin:0 0 30px;color:var(--gold,#c9ae75);font-family:var(--en,"Barlow",sans-serif);font-weight:500;font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.ed-service .sec-title{max-width:1000px;margin:0 0 48px;font-size:clamp(26px,3.3vw,48px);font-weight:500;line-height:1.55;letter-spacing:.035em;text-wrap:balance}
.ed-service .sec-body,.ed-service .rc-list,.ed-service .news-article p{color:var(--ed-text);font-size:15px;line-height:2.1;letter-spacing:.025em}
.ed-service .sec-body{max-width:850px;margin:0 0 20px}
.ed-service .ed-service-section:first-child{padding-top:70px;padding-bottom:100px}
.ed-service .ed-service-section:first-child .prod-detail{display:grid;grid-template-columns:1fr 1fr;gap:0 9%}
.ed-service .ed-service-section:first-child .sec-label{grid-column:1/-1}
.ed-service .ed-service-section:first-child .sec-title{grid-row:2/5;margin-bottom:0;font-size:clamp(25px,2.5vw,38px)}
.ed-service .ed-service-section:first-child .sec-body{grid-column:2;font-size:16px}
.ed-service .ed-feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--ed-rule);border:1px solid var(--ed-rule);margin-top:10px}
.ed-service .ed-feature-card{position:relative;display:flex;flex-direction:column;min-height:260px;padding:40px;background:var(--bg,#101112);text-decoration:none;transition:background .35s}
.ed-service a.ed-feature-card:hover{background:#1b1d1d}
.ed-service .str-fullwide-num{font-family:var(--en,"Barlow",sans-serif);color:var(--gold,#c9ae75);font-size:11px;letter-spacing:.12em;margin-bottom:28px}
.ed-service .ed-feature-card h3{font-size:24px;font-weight:500;letter-spacing:.04em;margin:0 0 18px;line-height:1.6}
.ed-service .ed-feature-card .sec-body{font-size:14px;margin:0 0 26px;max-width:540px}
.ed-service .ed-feature-card .more-link{align-self:flex-start;margin-top:auto}
.ed-service .ed-feature-grid+.sec-body{margin-top:30px;font-size:13px}
.ed-service :is(.sec-body,.rc-list,.news-article) a,.ed-reading :is(p,li,td) a{color:var(--gold,#c9ae75);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.ed-service .more-link,.ed-reading .more-link{display:inline-flex;align-items:center;gap:30px;padding:12px 0;border-bottom:1px solid var(--gold,#c9ae75);color:var(--fg,#efede8);text-decoration:none;font-size:13px;letter-spacing:.04em}
.ed-service .news-article:not(.ed-faq-list){max-width:100%;display:grid;grid-template-columns:minmax(200px,.8fr) 2fr;column-gap:8%;margin-top:40px}
.ed-service .news-article:not(.ed-faq-list) h3{font-size:19px;font-weight:500;margin:0;padding:28px 0;border-top:1px solid var(--ed-rule);line-height:1.8}
.ed-service .news-article:not(.ed-faq-list) p{margin:0;padding:28px 0;border-top:1px solid var(--ed-rule)}
.ed-service .spec-sec{background:#e9e7e0;color:#232726}
.ed-service .spec-sec .sec-label{color:#79633a}
.ed-service .spec-hero{display:grid;grid-template-columns:.85fr 1fr;gap:8%;align-items:stretch;margin-top:52px}
.ed-service .spec-hero-img{position:relative;overflow:hidden;min-height:420px}
.ed-service .spec-hero-img img{height:100%;width:100%;object-fit:cover;filter:grayscale(.7) brightness(.78);position:absolute;inset:0}
.ed-service .spec-hero-img-ov{position:absolute;inset:0;background:linear-gradient(140deg,rgba(0,0,0,.05),rgba(0,0,0,.3))}
.ed-service .spec-row{padding:24px 0;border-top:1px solid rgba(30,36,33,.22)}
.ed-service .spec-row:first-child{padding-top:0;border-top:0}
.ed-service .spec-row:last-child{padding-bottom:0}
.ed-service .spec-row-head{display:flex;align-items:center;justify-content:space-between;gap:20px}
.ed-service .spec-row-label{font-size:13px;font-weight:500}
.ed-service .spec-row-value{font-family:var(--en,"Barlow",sans-serif);font-size:clamp(32px,4.2vw,60px);font-weight:500;line-height:1.2;white-space:nowrap;letter-spacing:-.025em}
.ed-service .spec-row-value.jp{font-family:var(--jp,"Noto Sans JP",sans-serif);font-size:clamp(28px,3.2vw,46px)}
.ed-service .spec-row-value .unit{font-size:15px;margin-left:8px;letter-spacing:0}
.ed-service .spec-row-value .sep{display:inline-block;margin:0 8px;color:#8c7950}
.ed-service .spec-row-desc{font-size:12px;color:#595f5b;line-height:1.9;margin:12px 0 0}
.ed-service .spec-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ed-service .spec-tag{padding:7px 12px;border:1px solid #b1b3aa;font-size:12px}
.ed-service .works-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:45px}
.ed-service .works-head .sec-title{margin:0}
.ed-service .works-head .more-link{flex-shrink:0}
.ed-service .works-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.ed-service .work-card{position:relative;display:block;color:var(--fg,#efede8);text-decoration:none;aspect-ratio:.78;isolation:isolate;overflow:hidden;background:#242726}
.ed-service .work-card>img{position:absolute;inset:0;height:100%;width:100%;object-fit:cover;filter:grayscale(.65) brightness(.72);transition:transform .7s cubic-bezier(.22,1,.36,1),filter .7s}
.ed-service .work-card:hover>img{transform:scale(1.055);filter:grayscale(.15) brightness(.9)}
.ed-service .work-ov{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(5,8,8,.15) 45%,rgba(5,8,8,.94) 100%)}
.ed-service .work-info{position:absolute;bottom:28px;left:25px;right:25px}
.ed-service .work-mat{font-family:var(--en,"Barlow",sans-serif);font-size:11px;letter-spacing:.07em;color:#d4bd8c;margin-bottom:12px}
.ed-service .work-name{font-size:18px;font-weight:500;line-height:1.7}
.ed-service .ed-case-arrow{position:absolute;top:18px;right:18px;display:grid;place-items:center;width:35px;height:35px;border:1px solid rgba(255,255,255,.5);border-radius:50%;font-size:20px;background:rgba(10,12,12,.2)}
.ed-service .rc-list{padding-left:1.2em;max-width:950px;margin:0}
.ed-service .rc-list li{padding:7px 0}
.ed-service .biz-block,.ed-reading .biz-block{border-top:1px solid var(--ed-rule);padding-top:32px;margin-top:56px}
.ed-service .sub-title,.ed-reading .sub-title{font-size:13px;letter-spacing:.1em;color:var(--gold,#c9ae75);font-weight:500;margin:0 0 18px}
.ed-service .ed-faq-list{max-width:1000px;margin-top:10px}
.ed-faq{border-top:1px solid var(--ed-rule)}
.ed-faq:last-child{border-bottom:1px solid var(--ed-rule)}
.ed-faq summary{cursor:pointer;list-style:none;padding:26px 48px 26px 0;font-size:17px;font-weight:500;line-height:1.7;position:relative}
.ed-faq summary::-webkit-details-marker{display:none}
.ed-faq summary::after{content:'＋';position:absolute;right:8px;top:25px;font-size:21px;font-weight:300;color:var(--gold,#c9ae75);transition:transform .25s}
.ed-faq[open] summary::after{transform:rotate(45deg)}
.ed-faq p{max-width:850px;padding:0 40px 26px 0;margin:0!important}

/* Original diagrams keep their complete canvas. */
.ed-index{padding:60px var(--pad,6vw) 120px;max-width:1600px;margin:auto}
.ed-index .sec{padding:0}
.ed-index .sec-label{display:flex;justify-content:space-between;max-width:none;border-bottom:1px solid var(--ed-rule);padding-bottom:22px;margin-bottom:32px}
.ed-index .sec-label span{color:var(--muted,#999)}
.ed-index .prod-intro{max-width:800px;margin:0 0 64px}
.ed-index .sec-body{font-size:15px;line-height:2.1;color:var(--ed-text)}
.ed-index .col-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px 38px}
.ed-index .col-card{display:flex;flex-direction:column;position:relative;text-decoration:none;color:inherit;border-bottom:1px solid var(--ed-rule);padding-bottom:36px;min-width:0}
.ed-index .col-card:first-child{grid-column:1/-1;display:grid;grid-template-columns:1.1fr 1fr;gap:55px;align-items:center;padding-bottom:56px}
.ed-index .col-card-img{aspect-ratio:1.78;background:#e9e7e0;overflow:hidden}
.ed-index .col-card-img img{width:100%;height:100%;object-fit:contain;transition:transform .6s cubic-bezier(.22,1,.36,1);mix-blend-mode:multiply}
.ed-index .col-card:hover img{transform:scale(1.025)}
.ed-index .col-card-body{padding:26px 42px 0 0}
.ed-index .col-card:first-child .col-card-body{padding-top:0}
.ed-index .col-card-date{display:block;font-family:var(--en,"Barlow",sans-serif);font-size:12px;letter-spacing:.12em;color:var(--gold,#c9ae75);margin-bottom:16px}
.ed-index .col-card-ttl{font-size:clamp(19px,1.65vw,25px);font-weight:500;line-height:1.7;letter-spacing:.025em;margin:0 0 20px}
.ed-index .col-card:first-child .col-card-ttl{font-size:clamp(23px,2.1vw,33px)}
.ed-index .col-card-exc{display:block;font-size:13px;line-height:2;color:var(--muted,#aaa)}
.ed-index .ed-index-arrow{position:absolute;bottom:34px;right:4px;font-size:28px;font-weight:300;color:var(--gold,#c9ae75);transition:transform .3s}
.ed-index .col-card:hover .ed-index-arrow{transform:translate(3px,-3px)}

/* Stable readable measure and a restrained sticky index. */
.ed-reading{display:grid;grid-template-columns:235px minmax(0,840px);gap:8%;max-width:1420px;margin:0 auto;padding:64px var(--pad,6vw) 120px;align-items:start}
.ed-reading-main{min-width:0}
.ed-contents{position:sticky;top:116px;max-height:calc(100vh - 145px);overflow:auto;scrollbar-width:thin;scrollbar-color:#555 transparent;padding-right:12px}
.ed-contents-label{font-family:var(--en,"Barlow",sans-serif);font-size:12px;letter-spacing:.12em;color:var(--gold,#c9ae75);padding-bottom:19px;border-bottom:1px solid var(--ed-rule);margin:0 0 14px}
.ed-contents-label span{float:right;color:var(--muted,#999);font-size:10px;letter-spacing:.05em}
.ed-contents ol{list-style:none;margin:0;padding:0}
.ed-contents li{margin:0}
.ed-contents a{display:grid;grid-template-columns:21px 1fr;gap:9px;padding:10px 0;color:#b1b2ad;text-decoration:none;font-size:11px;line-height:1.75;transition:color .2s}
.ed-contents a:hover{color:var(--gold,#c9ae75)}
.ed-contents a span{font-family:var(--en,"Barlow",sans-serif);font-size:10px;color:#7b7f7b}
.ed-prose{font-size:15px;line-height:2.15;color:var(--ed-text);overflow-wrap:anywhere;letter-spacing:.025em}
.ed-prose p{margin:0 0 26px}
.ed-prose .news-detail-date{font-family:var(--en,"Barlow",sans-serif);letter-spacing:.12em;color:var(--gold,#c9ae75);font-size:12px;margin-bottom:35px}
.ed-prose h2{font-size:clamp(23px,2.15vw,31px);font-weight:500;line-height:1.7;color:var(--fg,#efede8);margin:74px 0 28px;padding-top:30px;border-top:1px solid var(--ed-rule);scroll-margin-top:110px;text-wrap:pretty}
.ed-prose h3{font-size:18px;font-weight:500;line-height:1.75;color:var(--fg,#efede8);margin:36px 0 16px}
.ed-prose strong{color:var(--fg,#efede8);font-weight:600}
.ed-prose ul,.ed-prose ol{padding-left:1.3em;margin:22px 0 30px}
.ed-prose li{padding:4px 0}
.ed-prose li::marker{color:var(--gold,#c9ae75)}
.ed-prose hr{display:none}
.ed-prose figure{margin:38px 0 46px}
.ed-prose figure>img{display:block;width:100%;height:auto;background:#e9e7e0}
.ed-prose figcaption{font-size:12px;line-height:1.8;color:var(--muted,#999);margin-top:14px;text-align:left}
.ed-table-scroll{max-width:100%;overflow:auto;border:1px solid var(--ed-rule);overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#817253 #1b1d1c}
.ed-prose table{width:100%;border-collapse:collapse;margin:0;font-size:13px;line-height:1.85;letter-spacing:0;min-width:530px}
.ed-prose th,.ed-prose td{padding:16px 18px;text-align:left;border:1px solid var(--ed-rule);vertical-align:top}
.ed-prose th{background:#242926;font-weight:500;color:#e8e4d9}
.ed-prose td{background:rgba(255,255,255,.015)}
.ed-prose tr:nth-child(even) td{background:rgba(255,255,255,.035)}
.ed-prose thead th{color:#e4cf9e}
.ed-prose .thread-blank-table-wrap{margin:26px 0 38px}
.ed-prose .thread-blank-table{min-width:660px;font-family:var(--en,"Barlow",sans-serif);font-variant-numeric:tabular-nums}
.ed-prose .thread-blank-table th{font-family:var(--jp,"Noto Sans JP",sans-serif);font-size:12px}
.ed-prose .thread-blank-table th small{display:inline-block;font-size:10px;font-weight:400;line-height:1.5;color:#a7aba5;margin-top:4px}
.ed-prose .thread-blank-table td{white-space:nowrap;text-align:center;font-size:15px;padding:12px 15px}
.ed-prose .thread-blank-table td:first-child{text-align:left;font-weight:600}
.ed-prose .thread-blank-box{padding:30px;border:1px solid var(--ed-rule);margin:36px 0;background:#191c1b}
.ed-prose .thread-blank-box.gold{border-color:#786747;background:rgba(201,174,117,.065)}
.ed-prose .thread-blank-box :is(h2,h3){margin-top:0;padding-top:0;border:0}
.ed-prose .thread-blank-box p:last-child{margin-bottom:0}
.ed-prose .thread-blank-lead{font-size:17px;line-height:2.1;color:var(--fg,#efede8)}
.ed-prose .thread-blank-mini{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:30px 0}
.ed-prose .thread-blank-mini>div{padding:22px;border:1px solid var(--ed-rule);font-size:13px}
.ed-prose .thread-blank-mini strong{display:block;color:var(--gold,#c9ae75);margin-bottom:10px}
.ed-prose .thread-blank-example{padding:20px 24px;border-left:2px solid var(--gold,#c9ae75);background:#1b1e1c;margin:28px 0;font-variant-numeric:tabular-nums}
.ed-prose .thread-blank-section-note{font-size:12px;color:var(--muted,#a2a59f);line-height:1.9}
.ed-reading .rc-list{padding-left:1.2em;color:var(--ed-text);font-size:13px;line-height:2.1}
.ed-reading .rc-list li{margin-bottom:12px}
.ed-policy .ed-prose table{min-width:0}
.ed-policy .ed-prose th{width:120px}

@media(min-width:1500px){.ed-service .ed-service-section{padding-left:max(var(--pad,6vw),calc((100vw - 1380px)/2));padding-right:max(var(--pad,6vw),calc((100vw - 1380px)/2))}}
@media(max-width:1100px){.ed-reading{grid-template-columns:195px minmax(0,1fr);gap:5%;padding-left:5vw;padding-right:5vw}.ed-service .works-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ed-service .work-card{aspect-ratio:1.1}.ed-service .spec-hero{gap:5%}.ed-service .spec-row-head{align-items:flex-start;flex-direction:column;gap:10px}.ed-service .spec-row-value{font-size:48px}.ed-service .ed-feature-card{padding:30px}}
@media(max-width:780px){
 .ed-service .ed-service-section{padding:66px var(--pad,6vw)}
 .ed-service .ed-service-section:first-child{padding-top:44px;padding-bottom:66px}
 .ed-service .ed-service-section:first-child .prod-detail{display:block}
 .ed-service .ed-service-section:first-child .sec-title{margin-bottom:30px}
 .ed-service .ed-service-section:first-child .sec-body{font-size:14px}
 .ed-service .sec-title{font-size:27px;margin-bottom:32px}
 .ed-service .sec-label{margin-bottom:23px;font-size:10px}
 .ed-service .ed-feature-grid{grid-template-columns:1fr}
 .ed-service .ed-feature-card{min-height:0;padding:28px 24px}
 .ed-service .ed-feature-card h3{font-size:21px}
 .ed-service .str-fullwide-num{margin-bottom:20px}
 .ed-service .news-article:not(.ed-faq-list){display:block;margin-top:25px}
 .ed-service .news-article:not(.ed-faq-list) h3{padding:28px 0 13px;font-size:18px}
 .ed-service .news-article:not(.ed-faq-list) p{border-top:0;padding:0 0 28px;font-size:14px}
 .ed-service .spec-hero{grid-template-columns:1fr;margin-top:32px;gap:38px}
 .ed-service .spec-hero-img{min-height:0;aspect-ratio:1.45}
 .ed-service .spec-row-head{flex-direction:row;align-items:center}
 .ed-service .spec-row-value{font-size:38px}
 .ed-service .spec-row-value.jp{font-size:30px}
 .ed-service .works-head{display:block;margin-bottom:32px}
 .ed-service .works-head .more-link{margin-top:22px}
 .ed-service .works-grid{gap:12px}
 .ed-service .work-card{aspect-ratio:.72}
 .ed-service .work-info{left:15px;right:15px;bottom:20px}
 .ed-service .work-name{font-size:15px}
 .ed-service .work-mat{font-size:9px;line-height:1.5;overflow-wrap:anywhere}
 .ed-service .ed-case-arrow{top:12px;right:12px;width:29px;height:29px;font-size:16px}
 .ed-service .sec-body,.ed-service .rc-list{font-size:14px}
 .ed-faq summary{font-size:15px;padding-right:38px}
 .ed-faq p{padding-right:10px;font-size:14px!important}
 .ed-index{padding:40px var(--pad,6vw) 70px}
 .ed-index .prod-intro{margin-bottom:40px}
 .ed-index .col-grid{grid-template-columns:1fr;gap:34px}
 .ed-index .col-card:first-child{display:flex;gap:0;padding-bottom:35px}
 .ed-index .col-card:first-child .col-card-body{padding-top:25px}
 .ed-index .col-card:first-child .col-card-ttl{font-size:22px}
 .ed-index .col-card-ttl{font-size:20px}
 .ed-index .col-card-exc{font-size:12px}
 .ed-reading{display:block;padding:30px var(--pad,6vw) 70px}
 .ed-contents{position:relative;top:auto;max-height:none;padding-right:0;margin-bottom:50px;border-bottom:1px solid var(--ed-rule);padding-bottom:24px}
 .ed-contents ol{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
 .ed-contents a{font-size:10px;padding:7px 0;gap:6px;grid-template-columns:17px 1fr}
 .ed-prose{font-size:14px;line-height:2.05}
 .ed-prose h2{font-size:23px;margin-top:52px;padding-top:25px;scroll-margin-top:100px}
 .ed-prose h3{font-size:17px}
 .ed-prose .thread-blank-lead{font-size:15px}
 .ed-prose figure{margin:30px 0}
 .ed-prose th,.ed-prose td{padding:13px 15px}
 .ed-prose .thread-blank-box{padding:23px 20px}
 .ed-prose .thread-blank-mini{grid-template-columns:1fr}
 .ed-policy .ed-prose table{font-size:12px}
 .ed-policy .ed-prose th{width:85px}
 .ed-policy .ed-prose th,.ed-policy .ed-prose td{padding:12px}
}


.ed-contents a.is-current{color:var(--gold)}
@media(max-width:780px){.ed-contents ol{grid-template-columns:1fr}.ed-contents a{font-size:13px;line-height:1.85;padding:10px 0}.ed-index .col-card-exc{font-size:14px}}
/* Service navigation continues the photographic direction of the home page. */
.page-service .page-hero:before{content:"";position:absolute;inset:0 0 0 28%;z-index:-1;background:linear-gradient(90deg,#101112,transparent),linear-gradient(0deg,#101112,transparent 90%),url('/nagayama-home/assets/about-machining-v10-1440.webp') center/cover;opacity:.35;filter:grayscale(1)}
.ed-service .ed-feature-card{isolation:isolate;overflow:hidden;background:#101112;min-height:330px}
.ed-service .ed-feature-card:before{content:"";position:absolute;inset:0;z-index:-2;background-position:center;background-size:cover;filter:grayscale(.8) brightness(.52);transition:transform .9s ease,filter .6s}
.ed-service .ed-feature-card:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#101112f2,#10111270),linear-gradient(0deg,#101112c9,transparent)}
.ed-service .ed-feature-card:nth-child(1):before{background-image:url('/nagayama-home/assets/stud-bolts-960.webp')}
.ed-service .ed-feature-card:nth-child(2):before{background-image:url('/nagayama-home/assets/about-machining-v10-960.webp')}
.ed-service .ed-feature-card:nth-child(3):before{background-image:url('/nagayama-home/assets/thread-rolling-960.webp')}
.ed-service .ed-feature-card:nth-child(4):before{background-image:url('/nagayama-home/assets/pins-960.webp')}
.ed-service .ed-feature-card:hover:before{transform:scale(1.05);filter:grayscale(.5) brightness(.6)}
@media(max-width:780px){.ed-service .ed-feature-card{min-height:285px}}