@import url('https://fonts.googleapis.com/css2?family=Zen+Old+Mincho:wght@500;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

:root{
  --blue:#5D8AC7;
  --blue-deep:#223A5E;
  --navy:#16283F;
  --accent:#E0793A;
  --bg:#F6F8FB;
  --card:#FFFFFF;
  --text:#2B2F36;
  --text-muted:#5B6572;
  --border:#DFE6EE;
  --maxw:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Noto Sans JP', sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,.brand{
  font-family:'Zen Old Mincho', serif;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--navy);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.brand{
  display:flex;align-items:center;gap:12px;
  font-size:1.15rem;
}
.brand img{height:42px;width:42px;border-radius:50%;}
.brand .en{font-family:'Zen Old Mincho',serif;font-size:1.3rem;letter-spacing:.06em;}
.brand .ja{display:block;font-family:'Noto Sans JP',sans-serif;font-size:.65rem;color:var(--text-muted);font-weight:400;letter-spacing:.1em;}

.nav{display:flex;gap:2px;}
.nav a{
  padding:10px 18px;font-size:.92rem;font-weight:500;
  color:var(--text);border-radius:6px;transition:background .2s,color .2s;
}
.nav a:hover,.nav a.active{background:var(--blue);color:#fff;}

.nav-toggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--navy);cursor:pointer;}

@media (max-width:760px){
  .nav-toggle{display:block;}
  .nav{
    position:absolute;top:76px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--border);
    flex-direction:column;padding:8px 16px 16px;
    display:none;
  }
  .nav.open{display:flex;}
  .nav a{padding:12px 8px;}
}

/* Hero */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;align-items:flex-end;
  background:#0d1b2c;
  overflow:hidden;
}
.hero img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.62;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg, rgba(13,27,44,.92) 0%, rgba(13,27,44,.35) 55%, rgba(13,27,44,.15) 100%);
}
.hero-content{position:relative;z-index:2;color:#fff;padding:64px 0 72px;}
.hero-eyebrow{
  font-size:.8rem;letter-spacing:.28em;color:#CBD9EC;margin-bottom:18px;font-weight:500;
}
.hero h1{
  color:#fff;font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.5;margin:0 0 22px;
}
.hero p{
  color:#E4EBF4;max-width:560px;font-size:1rem;margin:0;
}

/* Page header (non-home) */
.page-hero{
  background:var(--navy);
  color:#fff;padding:68px 0 46px;
}
.page-hero .eyebrow{font-size:.78rem;letter-spacing:.24em;color:var(--blue);font-weight:500;margin-bottom:14px;}
.page-hero h1{color:#fff;font-size:clamp(1.8rem,3.6vw,2.6rem);margin:0 0 12px;}
.page-hero p{color:#C7D2E0;margin:0;max-width:620px;}

/* Sections */
section{padding:76px 0;}
section.tight{padding:52px 0;}
.section-label{
  font-size:.78rem;letter-spacing:.22em;color:var(--accent);font-weight:700;margin-bottom:14px;
}
h2.section-title{font-size:clamp(1.5rem,2.6vw,2rem);margin:0 0 20px;}
.lead{color:var(--text-muted);max-width:680px;font-size:1rem;margin-bottom:8px;}

.alt-bg{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}

/* Grid / cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-2{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
@media (max-width:820px){.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:10px;
  padding:30px 26px;
}
.card .star{color:var(--accent);margin-right:6px;}
.card h3{font-size:1.05rem;margin:0 0 12px;}
.card p{color:var(--text-muted);font-size:.92rem;margin:0;}

/* Info table */
.info-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:10px;overflow:hidden;}
.info-table tr{border-bottom:1px solid var(--border);}
.info-table tr:last-child{border-bottom:none;}
.info-table th,.info-table td{text-align:left;padding:18px 24px;font-size:.94rem;vertical-align:top;}
.info-table th{
  width:180px;color:var(--text-muted);font-weight:500;background:#FAFBFD;
  font-family:'Zen Old Mincho',serif;letter-spacing:.05em;
}
@media (max-width:600px){
  .info-table th,.info-table td{display:block;width:100%;padding:10px 20px;}
  .info-table th{padding-bottom:2px;border-bottom:none;}
  .info-table tr{padding:12px 0;}
}

/* Officer list */
.officer-list div{
  display:flex;gap:18px;padding:5px 0;
}
.officer-list .role{
  width:130px;flex-shrink:0;color:var(--text-muted);font-size:.86rem;
}
.officer-list .name{font-size:.94rem;}

/* Plant list */
.plant-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
@media (max-width:760px){.plant-cols{grid-template-columns:1fr;}}
.plant-box{background:#fff;border:1px solid var(--border);border-radius:10px;padding:28px;}
.plant-box h3{
  font-size:.98rem;color:#fff;background:var(--blue);
  margin:-28px -28px 20px;padding:16px 28px;border-radius:10px 10px 0 0;
}
.plant-box li{padding:9px 0;border-bottom:1px dashed var(--border);font-size:.92rem;}
.plant-box li:last-child{border-bottom:none;}
.plant-box .num{color:var(--blue);font-weight:700;margin-right:8px;}

.mgmt-note{
  background:#fff;border:1px solid var(--border);border-radius:10px;padding:26px 28px;margin-top:24px;
  font-size:.92rem;color:var(--text-muted);
}
.mgmt-note strong{color:var(--navy);}

/* Product catalogue image blocks */
.catalog-block{margin-bottom:52px;}
.catalog-block:last-child{margin-bottom:0;}
.catalog-block h3{font-size:1.1rem;margin:0 0 6px;}
.catalog-block .cap{color:var(--text-muted);font-size:.88rem;margin-bottom:16px;}
.catalog-block img{border-radius:10px;border:1px solid var(--border);}

.item-lists{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:16px;}
@media (max-width:820px){.item-lists{grid-template-columns:1fr;}}
.item-lists .col h4{
  font-size:.85rem;color:var(--blue-deep);letter-spacing:.06em;margin:0 0 10px;
  border-bottom:2px solid var(--blue);display:inline-block;padding-bottom:4px;
}
.item-lists .col ul{margin-top:10px;}
.item-lists .col li{font-size:.86rem;padding:4px 0;color:var(--text);}
.item-lists .col li.rec::before{content:"★ ";color:var(--accent);}
.item-lists .col li:not(.rec)::before{content:"・";color:var(--text-muted);}

/* Design proposal */
.design-panel{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center;
  background:var(--navy);border-radius:14px;padding:44px;color:#fff;
}
@media (max-width:820px){.design-panel{grid-template-columns:1fr;}}
.design-panel img{border-radius:10px;}
.design-panel h3{color:#fff;font-size:1.3rem;margin:0 0 16px;}
.design-panel p{color:#C7D2E0;font-size:.94rem;margin:0;}

/* Eco */
.eco-card{background:#fff;border:1px solid var(--border);border-radius:10px;padding:30px 32px;margin-bottom:24px;}
.eco-card h3{font-size:1.05rem;margin:0 0 14px;display:flex;align-items:center;gap:10px;}
.eco-card h3 .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block;}
.eco-card p{color:var(--text-muted);font-size:.92rem;margin:0 0 10px;}
.eco-codes{
  font-family:'Noto Sans JP',sans-serif;font-size:.85rem;color:var(--blue-deep);
  background:#F1F5FA;border-radius:8px;padding:14px 18px;margin-top:12px;line-height:2;
}

/* CTA / contact strip */
.contact-strip{
  background:var(--blue);color:#fff;border-radius:14px;padding:40px 44px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;
}
.contact-strip h3{color:#fff;margin:0 0 6px;font-size:1.2rem;}
.contact-strip p{margin:0;color:#EAF1FB;font-size:.9rem;}
.contact-strip .cta-btn{
  background:#fff;color:var(--blue-deep);font-weight:700;padding:14px 30px;border-radius:30px;
  font-size:.94rem;white-space:nowrap;
}

/* Footer */
footer{background:var(--navy);color:#B9C6D6;padding:48px 0 28px;margin-top:20px;}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px;}
footer .f-brand{display:flex;align-items:center;gap:12px;color:#fff;}
footer .f-brand img{height:36px;width:36px;border-radius:50%;}
footer .f-info{font-size:.85rem;line-height:2;}
footer .f-info strong{color:#fff;}
.footer-bottom{
  text-align:center;font-size:.76rem;color:#7C8AA0;margin-top:32px;
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;
}

/* Utility */
.center{text-align:center;}
.mt-lg{margin-top:52px;}