@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&display=swap');

:root{
  --brown:#4b2c18;
  --brown2:#765136;
  --beige:#e9e1d2;
  --paper:#f6f4ef;
  --green:#315f45;
  --line:#bca98d;
  --text:#2e261f;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"Noto Sans JP",sans-serif;line-height:1.9}
img{display:block;width:100%}
a{color:inherit}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.narrow{max-width:850px}
.site-header{position:sticky;top:0;z-index:20;background:rgba(246,244,239,.94);backdrop-filter:blur(10px);border-bottom:1px solid rgba(75,44,24,.12)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between}
.brand{text-decoration:none;display:flex;align-items:center;color:var(--brown)}
.company-logo{width:248px;height:auto;max-height:48px;object-fit:contain;object-position:left center}
.header-nav{display:flex;gap:24px;margin-left:auto;margin-right:28px}
.header-nav a{text-decoration:none;font-size:13px}
.header-phone{text-decoration:none;display:flex;align-items:center;gap:14px;font-size:13px}
.header-phone strong{font-size:20px;color:var(--brown);letter-spacing:.04em}
.hero{min-height:650px;display:flex;align-items:center;position:relative;overflow:hidden;background:
  linear-gradient(110deg,rgba(28,50,37,.90),rgba(28,50,37,.66) 50%,rgba(28,50,37,.34)),
  radial-gradient(circle at 80% 25%,#81977a 0,#45604a 28%,#20392b 65%,#14251d 100%);
color:white}
.hero:before{content:"";position:absolute;inset:0;background:
  linear-gradient(135deg,transparent 0 55%,rgba(255,255,255,.05) 55% 56%,transparent 56%),
  repeating-linear-gradient(80deg,transparent 0 80px,rgba(255,255,255,.025) 80px 82px);pointer-events:none}
.hero-inner{position:relative;padding:90px 0}
.eyebrow,.section-label,.product-type{letter-spacing:.2em;font-size:14px;font-weight:700}
.eyebrow{color:#ddd0b9}
.hero h1{font-family:"Noto Serif JP",serif;font-weight:500;font-size:clamp(38px,6vw,72px);line-height:1.3;margin:18px 0 24px}
.hero h1 span{font-size:.8em}
.hero-copy{font-family:"Noto Serif JP",serif;font-size:18px}
.hero-cta{display:inline-block;margin-top:28px;padding:12px 30px;border:1px solid rgba(255,255,255,.65);text-decoration:none}
.message{padding:100px 0;text-align:center}
.message .section-label,.section-heading .section-label,.contact .section-label,.carbon .section-label{color:var(--brown2)}
.message h2,.section-heading h2,.carbon h2,.contact h2{font-family:"Noto Serif JP",serif;font-weight:500;font-size:clamp(32px,4vw,48px);line-height:1.45;margin:8px 0 24px;color:var(--brown)}
.message p:not(.section-label){font-family:"Noto Serif JP",serif;font-size:17px}
.company{padding:90px 0;background:#fff}
.company-inner{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
.company-intro h2{font-family:"Noto Serif JP",serif;color:var(--brown);font-weight:500;font-size:clamp(32px,4vw,46px);margin:8px 0 20px}
.company-intro p:not(.section-label){font-family:"Noto Serif JP",serif;font-size:16px}
.company-table{border-top:1px solid var(--line)}
.company-table div{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.company-table span{color:#766e64}
.company-table strong{font-weight:500}
.products{padding:100px 0;background:#ebe8e0}
.section-heading{text-align:center;margin-bottom:60px}
.section-heading>p:last-child{margin:0}
.product-card{position:relative;background:#fff;margin:0 0 70px;padding:58px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;border:1px solid rgba(75,44,24,.1);box-shadow:0 15px 40px rgba(50,35,20,.06)}
.product-number{position:absolute;right:30px;top:24px;font-family:"Noto Serif JP",serif;color:#c8b79c;font-size:58px;line-height:1}
.product-type{color:var(--brown2);margin:0 0 10px}
.product-copy h3{font-family:"Noto Serif JP",serif;color:var(--brown);font-size:clamp(30px,4vw,46px);line-height:1.35;margin:0 0 22px}
.product-copy h3 span{font-size:.62em}
.lead{font-family:"Noto Serif JP",serif;font-size:16px}
.features{list-style:none;padding:0;margin:28px 0 0}
.features li{padding:14px 0;border-top:1px solid var(--line)}
.features strong{display:block;font-family:"Noto Serif JP",serif;color:var(--brown);font-size:18px}
.features span{display:block;font-size:14px}
.product-images{display:grid;gap:18px;align-content:start}
.product-images figure{margin:0;overflow:hidden;background:#ddd}
.product-images img{aspect-ratio:16/10;object-fit:cover;transition:transform .5s}
.product-images figure:hover img{transform:scale(1.03)}
.product-note{grid-column:1/-1;display:flex;gap:10px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--line)}
.product-note span{font-size:12px;padding:6px 10px;background:var(--beige);color:var(--brown)}
.carbon{padding:100px 0;background:var(--green);color:white;text-align:center}
.carbon h2{color:white}
.carbon p:not(.section-label){max-width:720px;margin:0 auto}
.carbon-value{margin-top:28px;font-family:"Noto Serif JP",serif}
.carbon-value span{font-size:clamp(62px,9vw,110px);font-weight:600;line-height:1}
.carbon-value small{font-size:28px;margin-left:8px}
.carbon-caption{font-size:14px;margin-top:10px!important}
.contact{padding:90px 0;background:var(--beige)}
.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:50px}
.contact h2{margin-bottom:8px}
.phone-box{display:flex;flex-direction:column;text-decoration:none;background:white;padding:28px 36px;min-width:390px;border-left:6px solid var(--brown)}
.phone-box span{font-size:13px}
.phone-box strong{font-size:34px;color:var(--brown);letter-spacing:.04em}
.phone-box small{font-size:11px;color:#766e64}
.site-footer{background:#2d261f;color:#eee;padding:48px 0 20px}
.footer-inner{display:flex;justify-content:space-between;gap:30px;align-items:end}
.footer-inner strong{font-family:"Noto Serif JP",serif;font-size:22px}
.footer-inner p{margin:4px 0;font-size:12px;color:#d7d0c7}
.footer-inner a{border-bottom:1px solid #aaa;text-decoration:none;font-size:13px}
.copyright{text-align:center;margin-top:40px;font-size:10px;color:#aaa}
@media(max-width:850px){
  .header-nav{display:none}
  .company-inner{grid-template-columns:1fr;gap:35px}
  .header-phone span{display:none}
  .product-card{grid-template-columns:1fr;padding:34px 26px}
  .product-images{grid-template-columns:1fr 1fr}
  .product-note{grid-column:auto}
  .contact-inner,.footer-inner{flex-direction:column;align-items:flex-start}
  .phone-box{min-width:0;width:100%}
}
@media(max-width:560px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .header-inner{height:64px}
  .company-logo{width:190px;max-height:40px}
  .header-phone strong{font-size:16px}
  .hero{min-height:570px}
  .hero-inner{padding:70px 0}
  .hero h1{font-size:38px}
  .message,.products,.carbon{padding:70px 0}
  .section-heading{margin-bottom:40px}
  .product-images{grid-template-columns:1fr}
  .product-number{font-size:42px;right:18px;top:18px}
  .phone-box strong{font-size:28px}
}