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

:root{
  --bg:#f7f3ee;
  --bg-alt:#efe6d8;
  --card:#fffdfb;
  --text:#2e2118;
  --text-soft:#6b5c4f;
  --brand:#6b4a34;
  --brand-dark:#3a2a20;
  --accent:#b08d57;
  --border:#e0d3bf;
  --success:#4a7a5a;
  --danger:#a4453a;
  --radius:10px;
  --maxw:1180px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Noto Sans JP',sans-serif;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Shippori Mincho',serif;
  font-weight:700;
  color:var(--brand-dark);
  margin:0 0 .6em;
  line-height:1.4;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
button{font-family:inherit;cursor:pointer;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,243,238,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand-logo{display:flex;align-items:center;gap:10px;font-family:'Shippori Mincho',serif;font-weight:700;font-size:1.3rem;color:var(--brand-dark);letter-spacing:.05em;}
.brand-logo img{width:30px;height:30px;}
.brand-logo .sub{font-family:'Noto Sans JP',sans-serif;font-size:.6rem;font-weight:500;color:var(--text-soft);letter-spacing:.15em;display:block;}
nav.main-nav{display:flex;gap:26px;font-size:.92rem;}
nav.main-nav a{position:relative;padding:4px 0;color:var(--text);}
nav.main-nav a:hover,nav.main-nav a.active{color:var(--brand);}
nav.main-nav a.active::after{content:'';position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent);}
.header-actions{display:flex;align-items:center;gap:16px;}
.icon-link{position:relative;font-size:1.2rem;color:var(--brand-dark);}
.cart-badge{
  position:absolute;top:-8px;right:-10px;background:var(--brand);color:#fff;
  font-size:.65rem;min-width:17px;height:17px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;padding:0 3px;
}
.hamburger{display:none;background:none;border:none;font-size:1.4rem;color:var(--brand-dark);}

@media(max-width:860px){
  nav.main-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--bg);
    flex-direction:column;padding:24px 24px;gap:4px;
    transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;
  }
  nav.main-nav.open{transform:translateX(0);}
  nav.main-nav a{padding:14px 4px;border-bottom:1px solid var(--border);font-size:1.05rem;}
  .hamburger{display:block;}
}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:4px;border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-size:.9rem;letter-spacing:.03em;
  transition:background .15s,color .15s,transform .1s;
}
.btn:hover{background:var(--brand-dark);border-color:var(--brand-dark);}
.btn:active{transform:scale(.98);}
.btn-outline{background:transparent;color:var(--brand);}
.btn-outline:hover{background:var(--brand);color:#fff;}
.btn-gold{background:var(--accent);border-color:var(--accent);}
.btn-gold:hover{background:#9a7745;border-color:#9a7745;}
.btn-block{width:100%;}
.btn-sm{padding:9px 16px;font-size:.8rem;}
.btn:disabled{opacity:.45;cursor:not-allowed;}

/* hero */
.hero{
  background:linear-gradient(120deg,var(--bg-alt),var(--bg));
  padding:70px 0 60px;
  border-bottom:1px solid var(--border);
}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.hero h1{font-size:2.2rem;margin-bottom:.5em;}
.hero p{color:var(--text-soft);margin-bottom:1.6em;max-width:46ch;}
.eyebrow{display:inline-block;font-size:.75rem;letter-spacing:.15em;color:var(--accent);border:1px solid var(--accent);padding:4px 12px;border-radius:20px;margin-bottom:16px;}
.hero-visual{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.hero-visual img{border-radius:var(--radius);background:var(--card);padding:8px;border:1px solid var(--border);}
.hero-visual > div:nth-child(2){margin-top:26px;}
@media(max-width:780px){.hero-inner{grid-template-columns:1fr;}.hero{padding:44px 0 40px;}.hero h1{font-size:1.6rem;}}

/* sections */
section{padding:56px 0;}
.section-head{text-align:center;margin-bottom:34px;}
.section-head p{color:var(--text-soft);}
.bg-alt{background:var(--bg-alt);}

/* feature grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;text-align:center;}
.feature-card .ico{font-size:1.8rem;margin-bottom:10px;}
.feature-card h3{font-size:1.02rem;margin-bottom:.4em;}
.feature-card p{font-size:.86rem;color:var(--text-soft);margin:0;}
@media(max-width:780px){.feature-grid{grid-template-columns:1fr;}}

/* product grid & cards */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
@media(max-width:960px){.product-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:480px){.product-grid{grid-template-columns:1fr 1fr;gap:12px;}}
.product-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow .15s,transform .15s;display:flex;flex-direction:column;}
.product-card:hover{box-shadow:0 10px 26px rgba(58,42,32,.12);transform:translateY(-3px);}
.product-card .thumb{position:relative;aspect-ratio:1/1;background:var(--bg-alt);}
.product-card .thumb img{width:100%;height:100%;object-fit:contain;padding:14px;}
.badge{position:absolute;top:10px;left:10px;background:var(--brand-dark);color:#fff;font-size:.62rem;padding:3px 9px;border-radius:20px;letter-spacing:.05em;}
.badge.stock{background:var(--success);}
.badge.low{background:var(--danger);}
.product-card .info{padding:14px 14px 16px;flex:1;display:flex;flex-direction:column;}
.product-card .brand{font-size:.72rem;color:var(--accent);letter-spacing:.05em;margin-bottom:2px;}
.product-card .name{font-size:.9rem;margin-bottom:6px;flex:1;}
.product-card .cond{font-size:.72rem;color:var(--text-soft);margin-bottom:8px;}
.product-card .price{font-family:'Shippori Mincho',serif;font-size:1.12rem;color:var(--brand-dark);font-weight:700;}
.product-card .price small{font-size:.68rem;color:var(--text-soft);font-weight:400;margin-left:2px;}

/* layout: products page with filters */
.products-layout{display:grid;grid-template-columns:230px 1fr;gap:32px;align-items:start;}
@media(max-width:860px){.products-layout{grid-template-columns:1fr;}}
.filters{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:sticky;top:84px;}
.filters h3{font-size:.95rem;margin:0 0 12px;padding-bottom:10px;border-bottom:1px solid var(--border);}
.filter-group{margin-bottom:20px;}
.filter-group h4{font-size:.78rem;color:var(--text-soft);letter-spacing:.05em;margin:0 0 8px;text-transform:uppercase;}
.filter-group label{display:flex;align-items:center;gap:8px;font-size:.86rem;padding:4px 0;cursor:pointer;}
.filter-group input[type=checkbox]{accent-color:var(--brand);width:15px;height:15px;}
.range-row{display:flex;gap:8px;align-items:center;font-size:.82rem;}
.range-row input{width:100%;padding:6px 8px;border:1px solid var(--border);border-radius:4px;font-size:.8rem;}
.filters-mobile-toggle{display:none;}
@media(max-width:860px){
  .filters{position:static;margin-bottom:20px;display:none;}
  .filters.open{display:block;}
  .filters-mobile-toggle{display:flex;margin-bottom:14px;}
}
.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.toolbar select{padding:8px 10px;border:1px solid var(--border);border-radius:4px;background:var(--card);font-size:.85rem;}
.result-count{font-size:.85rem;color:var(--text-soft);}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.chip{background:var(--bg-alt);border:1px solid var(--border);border-radius:20px;padding:5px 12px;font-size:.78rem;display:flex;align-items:center;gap:6px;}
.chip button{background:none;border:none;color:var(--text-soft);font-size:.8rem;}
.empty-state{text-align:center;padding:60px 20px;color:var(--text-soft);}

/* product detail */
.pd-layout{display:grid;grid-template-columns:1fr 1fr;gap:46px;}
@media(max-width:860px){.pd-layout{grid-template-columns:1fr;gap:26px;}}
.pd-gallery .main-img{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;margin-bottom:12px;}
.pd-gallery .main-img img{width:70%;}
.pd-thumbs{display:flex;gap:10px;}
.pd-thumbs button{width:64px;height:64px;border-radius:6px;border:1px solid var(--border);background:var(--card);padding:8px;}
.pd-thumbs button.active{border-color:var(--accent);border-width:2px;}
.pd-info .brand-tag{color:var(--accent);font-size:.8rem;letter-spacing:.06em;margin-bottom:4px;display:block;}
.pd-info h1{font-size:1.5rem;margin-bottom:8px;}
.pd-price{font-family:'Shippori Mincho',serif;font-size:1.9rem;color:var(--brand-dark);margin-bottom:16px;}
.pd-price small{font-size:.75rem;color:var(--text-soft);font-weight:400;}
.spec-table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.88rem;}
.spec-table th,.spec-table td{text-align:left;padding:9px 0;border-bottom:1px solid var(--border);}
.spec-table th{width:110px;color:var(--text-soft);font-weight:500;}
.stock-note{display:flex;gap:10px;align-items:flex-start;background:var(--bg-alt);border:1px solid var(--border);border-radius:8px;padding:14px 16px;margin:18px 0;font-size:.82rem;color:var(--text-soft);}
.stock-note .dot{width:9px;height:9px;border-radius:50%;background:var(--success);margin-top:5px;flex-shrink:0;animation:pulse 1.8s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.qty-row{display:flex;align-items:center;gap:14px;margin:18px 0;}
.qty-box{display:flex;border:1px solid var(--border);border-radius:4px;}
.qty-box button{width:36px;height:38px;background:var(--bg-alt);border:none;font-size:1rem;}
.qty-box input{width:44px;text-align:center;border:none;background:transparent;font-size:.95rem;}
.pd-actions{display:flex;gap:12px;margin-top:6px;}
.desc-block{margin-top:30px;font-size:.92rem;color:var(--text-soft);}
.desc-block h3{font-size:1rem;color:var(--text);}
.condition-note{background:#fbf3e8;border:1px solid #ecd9b8;border-radius:8px;padding:14px 16px;font-size:.8rem;color:#7a5a2a;margin-top:16px;}

/* cart page */
.cart-table{width:100%;border-collapse:collapse;}
.cart-table th{text-align:left;font-size:.78rem;color:var(--text-soft);padding:0 0 10px;border-bottom:1px solid var(--border);font-weight:500;}
.cart-row td{padding:16px 0;border-bottom:1px solid var(--border);vertical-align:middle;}
.cart-item{display:flex;gap:14px;align-items:center;}
.cart-item img{width:64px;height:64px;object-fit:contain;background:var(--bg-alt);border-radius:6px;padding:8px;}
.cart-item .name{font-size:.9rem;margin-bottom:2px;}
.cart-item .cond{font-size:.75rem;color:var(--text-soft);}
.remove-link{font-size:.75rem;color:var(--danger);background:none;border:none;padding:0;margin-top:6px;}
.cart-summary{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-top:20px;margin-left:auto;max-width:360px;}
.summary-row{display:flex;justify-content:space-between;font-size:.88rem;padding:7px 0;}
.summary-row.total{border-top:1px solid var(--border);margin-top:8px;padding-top:14px;font-size:1.05rem;font-weight:700;color:var(--brand-dark);}
@media(max-width:700px){
  .cart-table thead{display:none;}
  .cart-row{display:block;border-bottom:1px solid var(--border);padding:14px 0;}
  .cart-row td{display:block;border:none;padding:4px 0;}
  .cart-summary{max-width:100%;}
}

/* checkout */
.steps{display:flex;justify-content:center;gap:0;margin-bottom:40px;flex-wrap:wrap;}
.step{display:flex;align-items:center;gap:10px;font-size:.82rem;color:var(--text-soft);}
.step .num{width:26px;height:26px;border-radius:50%;background:var(--bg-alt);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.78rem;}
.step.active{color:var(--brand-dark);font-weight:700;}
.step.active .num{background:var(--brand);color:#fff;border-color:var(--brand);}
.step.done .num{background:var(--success);color:#fff;border-color:var(--success);}
.step-divider{width:36px;height:1px;background:var(--border);margin:0 12px;align-self:center;}
.checkout-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:40px;align-items:start;}
@media(max-width:860px){.checkout-grid{grid-template-columns:1fr;}.steps{gap:8px;}.step-divider{width:16px;margin:0 4px;}.step span.label{display:none;}}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:.82rem;margin-bottom:6px;color:var(--text-soft);}
.form-row input,.form-row select,.form-row textarea{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:4px;font-size:.9rem;font-family:inherit;background:#fff;}
.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.pay-options{display:grid;gap:10px;}
.pay-option{border:1px solid var(--border);border-radius:8px;padding:14px 16px;display:flex;align-items:center;gap:12px;cursor:pointer;}
.pay-option.selected{border-color:var(--brand);background:var(--bg-alt);}
.pay-option input{accent-color:var(--brand);}
.pay-option .logo-tag{margin-left:auto;font-size:.7rem;color:var(--text-soft);border:1px solid var(--border);padding:2px 8px;border-radius:4px;}
.order-review-item{display:flex;justify-content:space-between;font-size:.85rem;padding:6px 0;}
.error-text{color:var(--danger);font-size:.76rem;margin-top:4px;display:none;}
.form-row.error input{border-color:var(--danger);}
.form-row.error .error-text{display:block;}
.confirm-box{text-align:center;padding:50px 20px;}
.confirm-box .check{width:64px;height:64px;border-radius:50%;background:var(--success);color:#fff;font-size:1.8rem;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;}
.order-no{font-family:'Shippori Mincho',serif;font-size:1.3rem;color:var(--brand-dark);margin:10px 0 20px;}

/* login / mypage */
.auth-card{max-width:420px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;}
.auth-tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:22px;}
.auth-tabs button{flex:1;padding:12px;background:none;border:none;font-size:.92rem;color:var(--text-soft);border-bottom:2px solid transparent;}
.auth-tabs button.active{color:var(--brand-dark);border-color:var(--brand);font-weight:700;}
.auth-panel{display:none;}
.auth-panel.active{display:block;}
.order-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:14px;}
.order-card .top{display:flex;justify-content:space-between;font-size:.82rem;color:var(--text-soft);margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--border);}
.status-tag{font-size:.72rem;padding:3px 10px;border-radius:20px;}
.status-tag.processing{background:#fbf3e8;color:#8a5a1a;}
.status-tag.shipped{background:#e6eef7;color:#2a5a8a;}
.status-tag.delivered{background:#e8f2ea;color:var(--success);}
.order-items-mini{display:flex;gap:10px;}
.order-items-mini img{width:46px;height:46px;object-fit:contain;background:var(--bg-alt);border-radius:6px;padding:6px;}

/* system / about diagram page */
.system-diagram{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;margin:30px 0;overflow-x:auto;}
.flow-row{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;}
.flow-box{background:var(--bg-alt);border:1px solid var(--border);border-radius:10px;padding:18px 22px;text-align:center;min-width:150px;}
.flow-box strong{display:block;font-family:'Shippori Mincho',serif;color:var(--brand-dark);margin-bottom:4px;}
.flow-box span{font-size:.76rem;color:var(--text-soft);}
.flow-arrow{font-size:1.4rem;color:var(--accent);}
.point-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:30px;}
@media(max-width:700px){.point-list{grid-template-columns:1fr;}.flow-row{flex-direction:column;}.flow-arrow{transform:rotate(90deg);}}
.point-item{display:flex;gap:14px;}
.point-item .num{font-family:'Shippori Mincho',serif;font-size:1.4rem;color:var(--accent);flex-shrink:0;}

/* footer */
footer{background:var(--brand-dark);color:#e8ddcf;padding:50px 0 24px;margin-top:60px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px;}
@media(max-width:780px){.footer-grid{grid-template-columns:1fr 1fr;}}
footer h4{color:#fff;font-size:.85rem;letter-spacing:.05em;margin-bottom:12px;font-family:'Noto Sans JP',sans-serif;}
footer a{display:block;font-size:.82rem;color:#cdbfa9;padding:4px 0;}
footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid #55483a;padding-top:20px;text-align:center;font-size:.75rem;color:#a5947c;}

/* toast */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--brand-dark);color:#fff;padding:13px 22px;border-radius:30px;
  font-size:.85rem;opacity:0;pointer-events:none;transition:.25s;z-index:200;
  display:flex;align-items:center;gap:8px;box-shadow:0 8px 20px rgba(0,0,0,.2);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* breadcrumb */
.breadcrumb{font-size:.78rem;color:var(--text-soft);margin-bottom:20px;}
.breadcrumb a{color:var(--text-soft);}
.breadcrumb a:hover{color:var(--brand);}

/* page hero small */
.page-hero{background:var(--bg-alt);padding:40px 0;border-bottom:1px solid var(--border);text-align:center;}
.page-hero h1{font-size:1.5rem;margin-bottom:6px;}
.page-hero p{color:var(--text-soft);font-size:.88rem;margin:0;}