:root{
  --green:#0d5d3b;
  --deep:#073d2a;
  --sage:#eaf3ed;
  --cream:#f8f5ee;
  --ink:#18251f;
  --muted:#66736d;
  --line:#e4e8e3;
  --white:#fff;
  --gold:#cf9c38;
  --shadow:0 22px 65px rgba(18,47,35,.12);
  --serif:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  line-height:1.8;
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.topline{background:var(--deep);color:#fff;text-align:center;font-size:12px;padding:8px 14px}
header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{width:225px}
.site-title{display:flex;flex-direction:column;line-height:1.25}
.site-title strong{font-size:13px}
.site-title small{font-size:10px;color:var(--muted)}
.navlinks{display:flex;align-items:center;gap:21px;font-size:13px;font-weight:800}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:52px;padding:0 23px;border-radius:999px;
  background:var(--green);border:1px solid var(--green);
  color:#fff;font-weight:900;
}
.btn.light{background:#fff;color:var(--green)}
.breadcrumb{padding:18px 0;color:var(--muted);font-size:12px}

/* list page */
.list-hero{padding:70px 0;background:linear-gradient(135deg,var(--cream),#fff)}
.list-hero h1{
  font-family:var(--serif);font-size:clamp(42px,6vw,66px);
  line-height:1.3;margin:0 0 18px;font-weight:600;
}
.list-hero p{max-width:720px;color:var(--muted);font-size:17px}
.intro-band{padding:28px 0;background:var(--deep);color:#fff}
.intro-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px}
.intro-band strong{font-family:var(--serif);font-size:22px}
.intro-band p{margin:0;color:rgba(255,255,255,.72)}
.results-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:34px 0 0}
.summary-box{
  border:1px solid rgba(255,255,255,.22);border-radius:18px;
  padding:18px;background:rgba(255,255,255,.08)
}
.summary-box strong{display:block;font-family:var(--serif);font-size:25px}
.summary-box span{font-size:12px;color:rgba(255,255,255,.72)}

/* category buttons */
.case-category-nav{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin:0 0 32px;
}
.case-category-nav a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:8px 18px;
  border:1px solid #cbd8d0;
  border-radius:999px;
  background:#f3f8f5;
  color:var(--deep);
  font-size:13px;
  font-weight:800;
  line-height:1;
  white-space:nowrap;
  box-shadow:0 3px 12px rgba(7,61,42,.06);
}
.case-category-nav a:first-child{
  background:var(--green);
  border-color:var(--green);
  color:#fff;
}
.case-category-nav a:hover{
  border-color:var(--green);
  transform:translateY(-1px);
}

/* equal case cards */
.related{padding:84px 0;background:var(--cream)}
.section-head{text-align:center;max-width:760px;margin:0 auto 38px}
.section-head h2{font-family:var(--serif);font-size:42px;margin:0 0 12px}
.section-head p{color:var(--muted)}
.case-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  align-items:stretch;
}
.case-card{
  display:flex;
  flex-direction:column;
  min-width:0;
  height:100%;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:22px;
  background:#fff;
  box-shadow:0 10px 34px rgba(19,45,34,.06);
  transition:.22s;
}
.case-card:hover{transform:translateY(-5px);box-shadow:0 18px 48px rgba(19,45,34,.12)}
.case-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .35s ease;
}
.case-card:hover img{transform:scale(1.025)}
.case-card-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:22px;
}
.case-card small{color:var(--green);font-weight:900}
.case-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  background:var(--deep);color:#fff;font-size:11px;font-weight:900;
  margin-bottom:10px;
}
.case-card h2,.case-card h3{
  font-family:var(--serif);
  font-size:21px;
  line-height:1.5;
  margin:8px 0 12px;
  overflow-wrap:anywhere;
}
.case-card p{font-size:13px;color:var(--muted);margin:0 0 14px}
.numbers{
  display:flex;gap:14px;font-size:12px;
  border-top:1px solid var(--line);
  padding-top:14px;
  margin-top:auto;
}
.numbers b{color:var(--deep)}
.case-card:after{
  content:"詳しく見る →";
  display:block;
  padding:0 22px 20px;
  color:var(--green);
  font-size:12px;
  font-weight:900;
}

/* detail pages */
.case-hero{padding:48px 0 74px;background:linear-gradient(180deg,#fbfaf7,#fff)}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:58px;align-items:center}
.eyebrow{color:var(--green);font-size:12px;font-weight:900;letter-spacing:.16em;margin:0 0 12px}
.case-hero h1,.section-title{font-family:var(--serif);font-weight:600;line-height:1.35}
.case-hero h1{font-size:clamp(35px,5.2vw,58px);margin:0 0 20px}
.lead{color:var(--muted);font-size:17px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}
.tag{padding:7px 11px;border-radius:999px;background:var(--sage);color:var(--green);font-size:12px;font-weight:900}
.hero-image{background:#fff;padding:12px;border-radius:28px;box-shadow:var(--shadow)}
.hero-image img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px}
.facts{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:22px;overflow:hidden;margin-top:-30px;
  position:relative;z-index:2;
}
.fact{background:#fff;padding:21px;text-align:center}
.fact small{display:block;color:var(--muted);font-size:11px}
.fact strong{display:block;font-family:var(--serif);font-size:22px;margin-top:3px}
.content{padding:84px 0}
.story-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:56px;align-items:start}
.article-section{padding:0 0 44px;margin-bottom:44px;border-bottom:1px solid var(--line)}
.article-section:last-child{border-bottom:0}
.article-section h2{font-family:var(--serif);font-size:31px;margin:0 0 18px}
.article-section p{color:#34423c;font-size:16px}
.quote{padding:28px;border-radius:22px;background:var(--sage);font-family:var(--serif);font-size:20px;color:var(--deep)}
.side-card{
  position:sticky;top:100px;border:1px solid var(--line);
  border-radius:22px;padding:24px;background:#fff;
  box-shadow:0 12px 38px rgba(18,47,35,.07)
}
.side-card h3{font-family:var(--serif);font-size:22px;margin:0 0 15px}
.meta{margin:0}
.meta div{display:grid;grid-template-columns:95px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.meta dt{color:var(--muted)}
.meta dd{margin:0;font-weight:800}
.side-card .btn{width:100%;margin-top:20px}
.strong-note{border-left:5px solid var(--green);padding:18px 20px;background:#f6faf7;font-weight:800;color:var(--deep)}

.faq-section{padding:82px 0;background:#f7faf8}
.faq-list{max-width:860px;margin:30px auto 0}
.faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;padding:22px 24px;margin:12px 0}
.faq-item h3{font-family:var(--serif);font-size:19px;margin:0 0 8px;color:var(--deep)}
.faq-item p{margin:0;color:var(--muted);font-size:14px}
.trust-strip{padding:32px 0;background:var(--sage)}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.trust-item{text-align:center}
.trust-item strong{display:block;font-family:var(--serif);font-size:20px;color:var(--deep)}
.trust-item span{font-size:12px;color:var(--muted)}

.cta{padding:76px 0;background:linear-gradient(135deg,var(--deep),#0b5637);color:#fff}
.cta-grid{display:flex;justify-content:space-between;gap:40px;align-items:center}
.cta h2{font-family:var(--serif);font-size:38px;line-height:1.4;margin:0 0 10px}
.cta p{color:rgba(255,255,255,.74);margin:0}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap}
footer{background:#092e20;color:rgba(255,255,255,.7);padding:38px 0;font-size:12px}
.footer-grid{display:flex;justify-content:space-between;gap:30px}
.footer-logo{width:240px;filter:brightness(0) invert(1);margin-bottom:14px}
.footer-links{display:flex;gap:18px;align-items:flex-start}

:focus-visible{outline:3px solid rgba(207,156,56,.55);outline-offset:4px}

@media(max-width:900px){
  .site-title{display:none}
  .navlinks a:not(.btn){display:none}
  .hero-grid,.story-grid{grid-template-columns:1fr}
  .side-card{position:static}
  .case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .facts{grid-template-columns:repeat(2,1fr)}
  .results-summary{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:1fr}
}

@media(max-width:640px){
  .wrap{width:min(100% - 26px,1120px)}
  .logo img{width:190px}
  .case-hero{padding-top:30px}
  .case-hero h1{font-size:37px}
  .facts{grid-template-columns:1fr;margin-top:24px}
  .fact{padding:15px}
  .case-grid{grid-template-columns:1fr}
  .section-head h2{font-size:34px}
  .intro-band .wrap,.cta-grid,.footer-grid{display:block}
  .intro-band p,.cta-actions,.footer-links{margin-top:18px}
  .cta-actions{display:grid}
  .btn{width:100%}
  .footer-links{display:grid;gap:10px}
  .results-summary{grid-template-columns:1fr 1fr;gap:8px}
  .summary-box{padding:13px}
  .summary-box strong{font-size:19px}
  .case-category-nav{
    flex-wrap:nowrap;
    overflow-x:auto;
    gap:8px;
    margin-bottom:26px;
    padding:2px 2px 10px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .case-category-nav::-webkit-scrollbar{display:none}
  .case-category-nav a{
    min-height:38px;
    padding:7px 15px;
    font-size:13px;
    flex:0 0 auto;
  }
  .faq-item{padding:18px}
  .list-hero{padding:48px 0}
  .list-hero p{font-size:15px}
}