/* 株式会社KENZAKI DR  共通スタイル
   IRシリーズの色：midnight navy #0E2233 / teal #0E9F8E / amber #F2A104 */
:root{
  --navy:#0E2233; --navy-2:#17324D; --teal:#0E9F8E; --teal-l:#E3F4F1;
  --amber:#F2A104; --ink:#1B2430; --sub:#5B6775; --line:#D9E0E6;
  --bg:#FFFFFF; --bg-2:#F4F7F9;
  --max:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;color:var(--ink);background:var(--bg);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--teal)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{color:#fff;text-decoration:none;line-height:1.2}
.logo strong{display:block;font-size:20px;letter-spacing:.08em}
.logo span{font-size:11px;color:#9FB3C4;letter-spacing:.1em}
.nav{display:flex;gap:4px 18px;flex-wrap:wrap;font-size:14px}
.nav a{color:#DCE6EE;text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current="page"]{color:#fff;border-color:var(--amber)}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 60%,#12475A 100%);color:#fff;padding:72px 0 64px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:linear-gradient(90deg,#1E3A8A,var(--teal),var(--amber),#E5484D)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center}
.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--amber);font-weight:700;margin-bottom:12px}
.hero h1{font-size:15px;font-weight:700;color:#B8C9D6;letter-spacing:.04em;margin-bottom:10px}
.hero .catch{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.4;margin-bottom:20px}
.hero .catch em{font-style:normal;color:var(--amber)}
.hero p.lead{color:#D5E0E8;margin-bottom:28px}
.hero figure img{border-radius:8px;box-shadow:0 12px 40px rgba(0,0,0,.35);background:#0b1a27;aspect-ratio:4/3;object-fit:cover;width:100%}
.hero figcaption{font-size:12px;color:#9FB3C4;margin-top:8px}

.btn{display:inline-block;background:var(--amber);color:var(--navy);font-weight:700;text-decoration:none;padding:13px 26px;border-radius:4px}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:#fff;border:1px solid #6F879A;margin-left:10px}

/* page head (sub pages) */
.page-head{background:var(--navy);color:#fff;padding:48px 0 40px;border-bottom:6px solid var(--teal)}
.page-head .eyebrow{margin-bottom:6px}
.page-head h1{font-size:clamp(24px,3.6vw,34px);line-height:1.45}
.page-head p{color:#C9D6E0;margin-top:10px;max-width:760px}

/* sections */
section{padding:72px 0}
section.alt{background:var(--bg-2)}
.sec-title{font-size:clamp(22px,3vw,28px);line-height:1.5;margin-bottom:8px}
.sec-label{font-size:12px;letter-spacing:.16em;color:var(--teal);font-weight:700;text-transform:uppercase}
.sec-lead{color:var(--sub);max-width:780px;margin-bottom:36px}

.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 24px}
.card h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.card p{color:var(--sub);font-size:15px}
.card .tag{display:inline-block;font-size:11px;font-weight:700;color:var(--teal);background:var(--teal-l);padding:2px 8px;border-radius:3px;margin-bottom:10px}
.card a.more{display:inline-block;margin-top:12px;font-weight:700;text-decoration:none}
.card.accent{border-top:4px solid var(--amber)}

ul.check{list-style:none;margin-top:10px}
ul.check li{padding-left:22px;position:relative;margin:4px 0;font-size:15px}
ul.check li::before{content:"";position:absolute;left:2px;top:.75em;width:10px;height:10px;border-radius:2px;background:var(--teal)}

/* scale bar (infrared legend) */
.scale{display:flex;height:8px;border-radius:4px;overflow:hidden;margin:18px 0 6px}
.scale i{flex:1}
.scale-label{display:flex;justify-content:space-between;font-size:12px;color:var(--sub)}

/* hybrid compare */
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:stretch}
.compare .arrow{display:flex;align-items:center;font-size:28px;color:var(--amber);font-weight:800}
.compare .card.old{background:#fafbfc}

/* steps */
ol.steps{list-style:none;counter-reset:s;display:grid;gap:14px}
ol.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px 20px 18px 70px;position:relative}
ol.steps li::before{content:counter(s);position:absolute;left:20px;top:18px;width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
ol.steps li strong{display:block;font-size:17px}
ol.steps li span{color:var(--sub);font-size:15px}

/* tables */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;background:#fff;font-size:15px}
th,td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
thead th{background:var(--navy);color:#fff;font-weight:700}
td.num{text-align:right;font-weight:700;white-space:nowrap}
tr.hl td{background:#FFF8E8}
.note{font-size:13px;color:var(--sub);margin-top:12px}
.note li{margin-left:1.2em}

table.info th{width:28%;background:var(--bg-2);color:var(--ink)}

/* products */
.product{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;padding:40px 0;border-bottom:1px solid var(--line)}
.product:last-child{border-bottom:0}
.product .role{color:var(--amber);font-weight:700;font-size:13px;letter-spacing:.1em}
.product h2{font-size:26px}
.product .sub{color:var(--sub);margin-bottom:12px}
.product img{border-radius:8px;border:1px solid var(--line);background:var(--bg-2)}

/* works list */
ul.works{list-style:none}
ul.works li{padding:10px 0;border-bottom:1px dashed var(--line)}

/* articles */
.article-list{display:grid;gap:16px}
.article-item{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:22px 24px;text-decoration:none;color:var(--ink)}
.article-item .meta{font-size:12px;color:var(--sub)}
.article-item h3{font-size:18px;margin:4px 0}
.article-item p{font-size:14px;color:var(--sub)}
.badge{display:inline-block;font-size:11px;padding:1px 8px;border-radius:3px;background:var(--bg-2);color:var(--sub);margin-left:6px}

/* CTA */
.cta{background:var(--navy);color:#fff;text-align:center;padding:64px 0}
.cta h2{font-size:clamp(22px,3vw,28px);margin-bottom:10px}
.cta p{color:#C9D6E0;margin-bottom:26px}
.cta .contact-line{display:flex;justify-content:center;gap:12px 32px;flex-wrap:wrap;margin-top:22px;font-size:15px}
.cta .contact-line a{color:#fff}

/* footer */
.site-footer{background:#0A1824;color:#8FA3B4;font-size:13px;padding:36px 0}
.site-footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-footer a{color:#C9D6E0}
.site-footer strong{color:#fff;font-size:15px}

@media (max-width:860px){
  .hero .wrap,.product,.g2{grid-template-columns:1fr}
  .g3{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare .arrow{justify-content:center;transform:rotate(90deg)}
  section{padding:56px 0}
  .hero{padding:52px 0 48px}
  .btn.ghost{margin:10px 0 0}
}

/* heritage (beadspark → KENZAKI DR) */
.heritage{background:#fff;border-bottom:1px solid var(--line)}
.heritage-flow{display:grid;grid-template-columns:1fr 40px 1fr 40px 1fr;align-items:stretch;gap:0;margin-top:8px}
.h-step{background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:22px 20px}
.h-step.now{background:var(--navy);border-color:var(--navy);color:#fff}
.h-year{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--teal)}
.h-step.now .h-year{color:var(--amber)}
.h-name{font-size:19px;font-weight:800;margin:2px 0 6px}
.h-text{font-size:14px;color:var(--sub)}
.h-step.now .h-text{color:#C9D6E0}
.h-line{align-self:center;height:3px;background:linear-gradient(90deg,var(--teal),var(--amber));margin:0 6px}
@media (max-width:860px){
  .heritage-flow{grid-template-columns:1fr}
  .h-line{width:3px;height:24px;justify-self:center;margin:0;background:linear-gradient(180deg,var(--teal),var(--amber))}
}

/* FAQ */
.faq{display:grid;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:8px;padding:0 20px}
.faq-item summary{cursor:pointer;font-weight:700;padding:16px 0;list-style:none;position:relative;padding-right:28px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"Q.";color:var(--teal);margin-right:8px}
.faq-item summary::after{content:"+";position:absolute;right:0;top:14px;font-size:20px;color:var(--teal)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{color:var(--sub);font-size:15px;padding:0 0 18px}
.profile h3{font-size:20px}
.pf-h{font-size:15px;margin:22px 0 6px;color:var(--navy);border-left:4px solid var(--teal);padding-left:8px}
.pf-list{list-style:none;font-size:15px}
.pf-list li{display:grid;grid-template-columns:120px 1fr;gap:8px;padding:6px 0;border-bottom:1px dashed var(--line)}
.pf-list li span{color:var(--sub);font-size:13px}
.pref-list{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:0 20px;font-size:14px}
.pref-list summary{cursor:pointer;padding:14px 0;font-weight:700;color:var(--teal)}
.pref-list p{color:var(--sub);padding-bottom:16px;line-height:2}
@media (max-width:860px){.pf-list li{grid-template-columns:1fr;gap:0}}