:root{
  --orange:#FF7A00;
  --orange-lt:#FFB04D;
  --peach:#FFEFDF;
  --dark:#222222;
  --body:#666666;
  --line:#E7DFD3;
  --bg:#FFFFFF;
  --shadow:0 6px 22px rgba(0,0,0,.10);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--dark);
  background:#FBF8F4;
  -webkit-font-smoothing:antialiased;
}

/* Top bar */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:16px;
  padding:14px 28px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.cart-btn{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--line);
  background:#fff;border-radius:999px;
  padding:8px 16px;cursor:pointer;
  font-family:inherit;font-size:14px;font-weight:700;color:var(--orange);
  position:relative;transition:.15s;
}
.cart-btn:hover{box-shadow:var(--shadow);transform:translateY(-1px);}
.cart-ico{font-size:18px;}
.cart-badge{
  min-width:20px;height:20px;padding:0 6px;
  background:var(--orange);color:#fff;border-radius:999px;
  font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand{display:flex;align-items:baseline;gap:10px;}
.brand-mark{font-weight:900;font-size:22px;color:var(--orange);letter-spacing:.5px;}
.brand-sub{font-size:12px;color:var(--body);}
.topbar-spacer{flex:1;}

/* Hero */
.hero{max-width:1240px;margin:34px auto 10px;padding:0 28px;}
.hero h1{font-size:34px;font-weight:900;margin:0 0 10px;}
.hero p{margin:0;color:var(--body);font-size:15px;line-height:1.7;max-width:820px;}

/* Layout: sidebar + content */
.layout{
  max-width:1240px;margin:26px auto 40px;padding:0 28px;
  display:flex;align-items:flex-start;gap:28px;
}
.sidebar{
  position:sticky;top:88px;
  flex:0 0 208px;width:208px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 12px;box-shadow:0 2px 10px rgba(0,0,0,.04);
  max-height:calc(100vh - 120px);overflow:auto;
}
.sidebar-title{
  font-size:11px;font-weight:900;letter-spacing:1.2px;text-transform:uppercase;
  color:var(--body);padding:4px 10px 10px;
}
.sidebar nav{display:flex;flex-direction:column;gap:2px;}
.cat-link{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  border:none;background:none;text-align:left;cursor:pointer;
  font-family:inherit;font-size:14px;font-weight:600;color:var(--dark);
  padding:9px 10px;border-radius:10px;transition:.15s;line-height:1.3;
}
.cat-link:hover{background:var(--peach);color:var(--orange);}
.cat-link.active{background:var(--orange);color:#fff;}
.cat-link .cnt{font-size:11px;font-weight:700;color:var(--body);}
.cat-link.active .cnt{color:#fff;}
.cat-link:hover .cnt{color:var(--orange);}

.content{flex:1;min-width:0;}

/* Category sections */
.cat-sec{margin-bottom:38px;scroll-margin-top:100px;}
.cat-head{
  display:flex;align-items:baseline;gap:10px;
  margin:0 0 16px;padding-bottom:10px;border-bottom:2px solid var(--line);
}
.cat-head h2{margin:0;font-size:21px;font-weight:900;}
.cat-head .cat-n{font-size:12px;font-weight:700;color:var(--orange);}

/* Grid */
.grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
.card{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  overflow:hidden;cursor:pointer;transition:.18s;
  display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.card-img{width:100%;aspect-ratio:1/1;object-fit:cover;background:var(--peach);display:block;}
.card-foot{padding:10px 14px 14px;}
.card-code{font-size:11px;color:var(--orange);font-weight:900;letter-spacing:.4px;}
.card-name{font-weight:700;font-size:15px;line-height:1.35;margin-top:3px;}

.end-msg{text-align:center;color:var(--body);font-size:13px;padding:24px 0;}

/* Modal */
.modal-overlay{
  position:fixed;inset:0;z-index:100;
  background:rgba(30,20,10,.55);
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.modal-overlay[hidden]{display:none;}
.modal{
  background:#fff;border-radius:18px;max-width:880px;width:100%;
  max-height:92vh;overflow:auto;position:relative;box-shadow:var(--shadow);
}
.modal-close{
  position:absolute;top:12px;right:14px;z-index:2;
  width:38px;height:38px;border:none;border-radius:50%;
  background:rgba(255,255,255,.9);font-size:24px;line-height:1;cursor:pointer;color:var(--dark);
}
.modal-close:hover{background:#fff;}
.modal-imgwrap{background:var(--peach);text-align:center;padding:8px 0;}
.modal-imgwrap img{display:inline-block;max-width:100%;max-height:52vh;width:auto;height:auto;vertical-align:middle;}
.modal-body{padding:22px 28px 28px;}
.detail-code{color:var(--orange);font-weight:900;font-size:13px;letter-spacing:.5px;}
.modal-body h2{margin:2px 0 4px;font-size:24px;font-weight:900;}
.detail-cat{color:var(--body);font-size:12px;font-weight:700;margin-bottom:16px;}
.info-table{width:100%;border-collapse:collapse;margin-bottom:20px;}
.info-table td{padding:11px 12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top;}
.info-table td.k{color:var(--body);font-weight:700;width:34%;background:#FBF8F4;}
.info-table td.v{color:var(--dark);}
.interest-btn{
  width:100%;padding:14px;border:none;border-radius:12px;
  background:var(--orange);color:#fff;font-size:16px;font-weight:700;
  font-family:inherit;cursor:pointer;transition:.15s;
}
.interest-btn:hover{background:#e96e00;}
.interest-btn.added{background:#2BA85A;}

/* Drawer */
.drawer-overlay{position:fixed;inset:0;z-index:120;background:rgba(30,20,10,.45);}
.drawer-overlay[hidden]{display:none;}
.drawer{
  position:absolute;top:0;right:0;height:100%;width:380px;max-width:90vw;
  background:#fff;display:flex;flex-direction:column;box-shadow:var(--shadow);
  animation:slideIn .2s ease;
}
@keyframes slideIn{from{transform:translateX(100%);}to{transform:translateX(0);}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line);}
.drawer-head h2{margin:0;font-size:20px;font-weight:900;}
.drawer-close{border:none;background:none;font-size:26px;cursor:pointer;color:var(--dark);line-height:1;}
.drawer-list{flex:1;overflow:auto;padding:14px 18px;display:flex;flex-direction:column;gap:12px;}
.drawer-empty{color:var(--body);font-size:14px;text-align:center;margin-top:40px;}
.cart-item{display:flex;gap:12px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:10px;}
.cart-item img{width:64px;height:48px;object-fit:cover;border-radius:8px;background:var(--peach);}
.cart-item .ci-name{font-size:14px;font-weight:700;}
.cart-item .ci-code{font-size:11px;color:var(--orange);font-weight:900;}
.cart-item .ci-del{margin-left:auto;color:var(--body);border:none;background:none;font-size:18px;cursor:pointer;}
.drawer-foot{padding:16px 18px;border-top:1px solid var(--line);display:flex;gap:10px;}
.send-btn{flex:1;padding:13px;border:none;border-radius:12px;background:var(--orange);color:#fff;font-weight:700;font-size:15px;font-family:inherit;cursor:pointer;}
.send-btn:hover{background:#e96e00;}
.clear-btn{padding:13px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--body);font-weight:700;cursor:pointer;font-family:inherit;}

@media(max-width:1000px){
  .grid{grid-template-columns:repeat(2,1fr);gap:16px;}
}
@media(max-width:760px){
  .layout{flex-direction:column;padding:0 16px;gap:16px;}
  .sidebar{
    position:static;flex:none;width:100%;max-height:none;
    display:flex;align-items:center;gap:8px;overflow-x:auto;padding:12px;
  }
  .sidebar-title{display:none;}
  .sidebar nav{flex-direction:row;gap:8px;}
  .cat-link{white-space:nowrap;background:var(--peach);}
  .grid{grid-template-columns:repeat(2,1fr);}
  .hero{padding:0 16px;}
  .hero h1{font-size:26px;}
  .topbar{padding:12px 16px;}
}
@media(max-width:480px){
  .grid{grid-template-columns:1fr;}
}