:root{
  --teal:#46b5bd;
  --charcoal:#2f2f2f;
  --brown:#a66a35;
  --cream:#fff8ef;
  --white:#ffffff;
  --gray:#f5f5f5;
  --text:#444;
  --radius:20px;
  --shadow:0 12px 30px rgba(0,0,0,.08);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;
  color:var(--text);
  background:var(--cream);
  line-height:1.7;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1120px,92%);margin:auto}

.site-header{
  background:var(--white);
  position:sticky;
  top:0;
  z-index:1000;
  box-shadow:0 2px 15px rgba(0,0,0,.06);
}
.navbar{
  min-height:78px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-weight:800;
  color:var(--charcoal);
  font-size:1.2rem;
}
.logo span{color:var(--teal)}
.nav-menu{
  display:flex;
  gap:28px;
  list-style:none;
}
.nav-menu a{
  font-weight:600;
  color:var(--charcoal);
}
.nav-menu a.active,
.nav-menu a:hover{color:var(--teal)}
.mobile-toggle{
  display:none;
  background:none;
  border:0;
  font-size:28px;
  cursor:pointer;
  color:var(--charcoal);
}

.hero{
  min-height:72vh;
  display:flex;
  align-items:center;
  background:linear-gradient(120deg,rgba(70,181,189,.9),rgba(255,248,239,.86));
  padding:90px 0;
}
.hero-content{
  max-width:720px;
}
.hero h1{
  font-size:clamp(2.2rem,5vw,4.8rem);
  color:var(--charcoal);
  line-height:1.15;
  margin-bottom:22px;
}
.hero p{
  font-size:1.15rem;
  margin-bottom:30px;
}

.section{
  padding:90px 0;
  background:var(--cream);
}
.section:nth-child(even){background:var(--white)}
.section-title{
  text-align:center;
  margin-bottom:46px;
}
.section-title h2{
  font-size:clamp(1.8rem,3vw,2.8rem);
  color:var(--charcoal);
}
.section-title p{
  max-width:680px;
  margin:12px auto 0;
}

.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.card,
.info-box{
  background:var(--white);
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
}
.card img{
  border-radius:16px;
  height:220px;
  width:100%;
  object-fit:cover;
  margin-bottom:20px;
}
.card h3,
.info-box h3{
  color:var(--charcoal);
  margin-bottom:10px;
}
.menu-list{
  list-style:none;
}
.menu-list li{
  padding:16px 0;
  border-bottom:1px solid #eee;
  display:flex;
  justify-content:space-between;
  gap:20px;
}
.gallery{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.gallery img{
  border-radius:18px;
  height:210px;
  width:100%;
  object-fit:cover;
}
.cta{
  background:linear-gradient(135deg,var(--teal),var(--brown));
  color:var(--white);
  padding:70px 30px;
  border-radius:28px;
  text-align:center;
}
.cta h2{font-size:2.2rem;margin-bottom:16px}
.btn{
  display:inline-block;
  margin-top:24px;
  padding:14px 28px;
  border-radius:999px;
  background:var(--charcoal);
  color:var(--white);
  font-weight:700;
}
.btn:hover{background:var(--brown)}

.breadcrumb{
  padding:22px 0;
  font-size:.95rem;
  color:#666;
}
.breadcrumb a{color:var(--teal)}

.contact-form{
  display:grid;
  gap:18px;
}
.contact-form input,
.contact-form textarea{
  width:100%;
  padding:15px 18px;
  border:1px solid #ddd;
  border-radius:14px;
  font:inherit;
}
.contact-form textarea{min-height:150px}
.contact-form button{
  border:0;
  cursor:pointer;
  padding:15px 28px;
  border-radius:999px;
  background:var(--teal);
  color:var(--white);
  font-weight:700;
}

.site-footer{
  background:var(--charcoal);
  color:var(--white);
  padding:60px 0 25px;
}
.site-footer a{color:#ddd}
.site-footer a:hover{color:var(--teal)}

.back-to-top{
  position:fixed;
  right:22px;
  bottom:22px;
  width:46px;
  height:46px;
  border-radius:50%;
  border:0;
  background:var(--teal);
  color:var(--white);
  cursor:pointer;
  font-size:20px;
  box-shadow:var(--shadow);
  visibility:hidden;
  transform:translateY(15px);
  transition:.25s ease;
}
.back-to-top.show{
  visibility:visible;
  transform:translateY(0);
}

@media(max-width:900px){
  .mobile-toggle{display:block}
  .nav-menu{
    position:absolute;
    top:78px;
    left:0;
    right:0;
    background:var(--white);
    flex-direction:column;
    gap:0;
    padding:18px 24px;
    box-shadow:0 14px 25px rgba(0,0,0,.08);
    transform:translateY(-10px);
    visibility:hidden;
    pointer-events:none;
  }
  .nav-menu.open{
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }
  .nav-menu li{padding:12px 0}
  .grid{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:1fr 1fr}
}

@media(max-width:640px){
  .hero{min-height:auto;padding:70px 0}
  .section{padding:65px 0}
  .grid,
  .gallery{grid-template-columns:1fr}
  .card img,
  .gallery img{height:230px}
  .menu-list li{flex-direction:column}
}