:root{
  --green:#6FA97F;
  --green-dark:#3E7A4E;
  --green-deep:#2C5A3A;
  --green-pale:#F2F7F0;
  --ink:#2E332E;
  --ink-light:#5F6A5F;
  --white:#fff;
  --accent:#E47A52;
  --radius:16px;
  --font:"Zen Kaku Gothic New","Hiragino Sans","Noto Sans JP",sans-serif;
  --font-en:"Outfit","Zen Kaku Gothic New",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--white);
  line-height:1.9;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1080px,90vw);margin:0 auto}
.narrow{width:min(760px,90vw);margin:0 auto}

/* header */
.header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(0,0,0,.06);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{font-family:var(--font-en);font-size:20px;font-weight:600;letter-spacing:.06em;color:var(--green-deep)}
.logo span{color:var(--green)}
.nav ul{display:flex;gap:28px;list-style:none}
.nav a{font-size:14px;letter-spacing:.04em;color:var(--ink-light);transition:color .2s}
.nav a:hover,.nav a.current{color:var(--green-dark)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--green-deep);margin:5px 0;transition:.3s}

/* pattern band */
.band{
  background-color:var(--green);
  background-image:url("../images/pattern.svg");
  background-repeat:repeat;
  background-size:240px 240px;
}
.band-pale{background:var(--green-pale)}

/* hero (画像1枚) */
.visually-hidden{
  position:absolute;width:1px;height:1px;
  padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.hero-full{line-height:0}
.hero-full img{width:100%;height:auto}
.hero-full .sp{display:none}

/* hero (旧・テキスト版) */
.hero{padding:88px 0 96px;text-align:center;color:var(--white)}
.hero h1{
  font-size:clamp(28px,5vw,46px);
  font-weight:700;letter-spacing:.04em;line-height:1.55;
  text-shadow:0 2px 12px rgba(0,0,0,.14);
}
.hero p{margin-top:20px;font-size:15px;letter-spacing:.04em;opacity:.95}
.hero-photo{
  width:min(880px,90vw);margin:44px auto 0;
  border-radius:24px;overflow:hidden;
  box-shadow:0 14px 40px rgba(0,0,0,.16);
}
.hero-photo img{width:100%;height:auto}

/* page hero (下層) */
.page-hero{padding:60px 0 64px;text-align:center;color:var(--white)}
.page-hero .en{font-family:var(--font-en);font-size:clamp(30px,6vw,52px);font-weight:600;letter-spacing:.1em}
.page-hero .ja{margin-top:6px;font-size:15px;letter-spacing:.14em}
.page-hero .lead{margin-top:20px;font-size:17px;font-weight:500}

/* section */
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-head .en{
  display:block;font-family:var(--font-en);
  font-size:clamp(26px,4.4vw,42px);font-weight:600;
  letter-spacing:.1em;color:var(--green);line-height:1.2;
}
.section-head .ja{display:block;margin-top:8px;font-size:14px;letter-spacing:.14em;color:var(--ink-light)}

/* philosophy */
.philosophy p{margin-bottom:1.6em;font-size:16.5px}
.philosophy p:last-child{margin-bottom:0}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{
  background:var(--white);border-radius:var(--radius);
  box-shadow:0 4px 20px rgba(46,51,46,.08);
  overflow:hidden;transition:transform .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(46,51,46,.14)}
.card-img{background:var(--green-pale);aspect-ratio:344/180}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-body{padding:24px;flex:1;display:flex;flex-direction:column}
.card-en{font-family:var(--font-en);font-size:13px;letter-spacing:.14em;color:var(--green);font-weight:600}
.card-title{margin-top:4px;font-size:19px;font-weight:700;letter-spacing:.03em}
.card-text{margin-top:12px;font-size:14.5px;color:var(--ink-light);line-height:1.85;flex:1}
.card-more{margin-top:18px;font-size:13px;letter-spacing:.08em;color:var(--green-dark);font-weight:500}
.card-more::after{content:" →"}

/* block (下層の記事ブロック) */
.block{margin-bottom:64px}
.block:last-child{margin-bottom:0}
.block h3{
  font-size:21px;font-weight:700;letter-spacing:.03em;
  padding-bottom:12px;margin-bottom:20px;
  border-bottom:2px solid var(--green);
  display:inline-block;
}
.block p{margin-bottom:1.4em}
.block p:last-child{margin-bottom:0}
.block-photos{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:24px;align-items:start}
.block-photos img{border-radius:12px;width:100%;height:auto}

/* category (activities) */
.cat{margin-bottom:80px}
.cat:last-child{margin-bottom:0}
.cat-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.cat-head .num{font-family:var(--font-en);font-size:44px;font-weight:600;color:var(--green);line-height:1}
.cat-head .name{font-size:26px;font-weight:700;letter-spacing:.08em}
.cat-head .desc{font-size:14.5px;color:var(--ink-light)}
.item{
  background:var(--white);border-radius:var(--radius);
  box-shadow:0 4px 20px rgba(46,51,46,.07);
  padding:32px;margin-bottom:24px;
}
.item:last-child{margin-bottom:0}
.item h4{font-size:18px;font-weight:700;margin-bottom:16px;color:var(--green-deep)}
.item p{font-size:15px;color:var(--ink-light);max-width:600px}
.item-photos{display:grid;gap:14px;margin-top:22px;max-width:600px}
.item-photos img{border-radius:10px;width:100%;height:auto}

/* product */
.product{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);
  gap:40px;align-items:center;margin-bottom:72px;
}
.product:nth-child(even) .product-img{order:2}
.product:last-child{margin-bottom:0}
.product-img{background:var(--green-pale);border-radius:var(--radius);padding:24px}
.product-img img{border-radius:10px;width:100%;max-width:330px;height:auto;margin:0 auto}
.product-img .sp{display:none}
.product-body h3{font-size:23px;font-weight:700;margin-bottom:6px}
.product-body .sub{font-size:13px;letter-spacing:.1em;color:var(--green);font-family:var(--font-en);font-weight:600;margin-bottom:16px}
.product-body p{margin-bottom:1.3em;font-size:15.5px;color:var(--ink-light)}
.product-body p:last-child{margin-bottom:0}

/* member */
.member{
  display:grid;grid-template-columns:200px minmax(0,1fr);
  gap:32px;align-items:start;margin-bottom:56px;
}
.member:last-child{margin-bottom:0}
.member-photo img{border-radius:50%;width:200px;height:200px;object-fit:cover}
.member-role{font-family:var(--font-en);font-size:13px;letter-spacing:.12em;color:var(--green);font-weight:600}
.member-name{font-size:24px;font-weight:700;margin:4px 0 16px}
.member p{font-size:15.5px;color:var(--ink-light)}

.partners{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.partner{background:var(--white);border-radius:var(--radius);box-shadow:0 4px 20px rgba(46,51,46,.07);padding:26px}
.partner h4{font-size:19px;font-weight:700;margin-bottom:12px}
.partner p{font-size:14.5px;color:var(--ink-light)}
.partner img{border-radius:10px;margin-bottom:16px;width:100%;height:auto}
.partner a{color:var(--green-dark);font-size:13px;letter-spacing:.06em;display:inline-block;margin-top:12px}
.partner a::after{content:" ↗"}

/* closing */
.closing{
  background:var(--white);border-radius:24px;
  padding:48px clamp(24px,5vw,56px);
  box-shadow:0 6px 28px rgba(46,51,46,.09);
}
.closing p{font-size:16.5px;line-height:2.05}

/* button */
.btn{
  display:inline-block;background:var(--accent);color:var(--white);
  padding:15px 40px;border-radius:999px;font-size:15px;font-weight:500;
  letter-spacing:.06em;transition:opacity .2s,transform .2s;
}
.btn:hover{opacity:.88;transform:translateY(-2px)}
.btn-line{background:var(--green-dark)}

/* contact */
.contact-box{text-align:center}
.contact-box dl{display:inline-block;text-align:left;margin-top:24px}
.contact-box dt{font-size:12.5px;letter-spacing:.12em;color:var(--green);font-weight:600;margin-top:18px}
.contact-box dd{font-size:16px;margin-top:2px}
.contact-box dd a{color:var(--green-dark);font-weight:500}

/* footer */
.footer{background:var(--green-deep);color:rgba(255,255,255,.9);padding:56px 0 28px;margin-top:0}
.footer-inner{display:flex;justify-content:space-between;gap:36px;flex-wrap:wrap}
.footer-logo{font-family:var(--font-en);font-size:20px;font-weight:600;letter-spacing:.06em;color:#fff}
.footer-tag{font-size:13.5px;margin-top:10px;opacity:.8;line-height:1.9}
.footer-nav ul{list-style:none;display:grid;gap:10px}
.footer-nav a{font-size:14px;opacity:.85;transition:opacity .2s}
.footer-nav a:hover{opacity:1}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);font-size:12px;opacity:.65;text-align:center}

@media(max-width:820px){
  .nav{
    position:fixed;inset:64px 0 auto;background:#fff;
    border-bottom:1px solid rgba(0,0,0,.08);
    max-height:0;overflow:hidden;transition:max-height .3s;
  }
  .nav.open{max-height:400px}
  .nav ul{flex-direction:column;gap:0;padding:8px 5vw 20px}
  .nav a{display:block;padding:14px 0;border-bottom:1px solid rgba(0,0,0,.05)}
  .nav-toggle{display:block}
  .product{grid-template-columns:1fr;gap:24px}
  .product:nth-child(even) .product-img{order:0}
  .product-img .pc{display:none}
  .product-img .sp{display:block}
  .hero-full .pc{display:none}
  .hero-full .sp{display:block}
  .item{padding:26px}
  .member{grid-template-columns:1fr;gap:20px;text-align:center}
  .member-photo img{margin:0 auto;width:160px;height:160px}
  .section{padding:60px 0}
}