:root{
  --blue:#0B3B8C; --blue-2:#1E5FD0; --bg:#F4F5F7; --card:#fff;
  --text:#16181D; --muted:#8A8F99; --line:#EDEFF2; --price:#D93A2B; --gold:#C8A15A;
  --radius:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text); background:var(--bg); padding-bottom:64px;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit;border:0;background:none;cursor:pointer}
.wrap{max-width:560px;margin:0 auto}

/* 顶部 */
.topbar{position:sticky;top:0;z-index:30;background:var(--blue);color:#fff;padding:10px 16px 12px}
.topbar .store{font-size:17px;font-weight:600;letter-spacing:.2px}
.topbar .sub{font-size:12px;opacity:.75;margin-top:2px}
.notice{background:#FFF7E8;color:#8A5B00;font-size:12.5px;padding:8px 16px;display:flex;gap:6px;align-items:center}
.notice .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 6px}

/* banner */
.banner{margin:12px;border-radius:var(--radius);overflow:hidden;background:linear-gradient(135deg,#0B3B8C,#2C6BE0);color:#fff;padding:22px 18px;position:relative}
.banner h2{margin:0;font-size:20px;letter-spacing:.5px}
.banner p{margin:6px 0 0;font-size:12.5px;opacity:.85}
.banner .tag{position:absolute;right:14px;top:14px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);border-radius:20px;padding:2px 10px;font-size:11px}

/* 分类 */
.cats{display:flex;gap:8px;overflow-x:auto;padding:4px 12px 10px;scrollbar-width:none}
.cats::-webkit-scrollbar{display:none}
.cats button{flex:0 0 auto;padding:7px 14px;border-radius:20px;background:#fff;color:#4A4F57;font-size:13px;border:1px solid var(--line)}
.cats button.on{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:600}

/* 商品行 */
.list{padding:0 12px 12px}
.row{display:flex;gap:12px;background:var(--card);border-radius:var(--radius);padding:12px;margin-bottom:10px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.row .pic{width:92px;height:92px;border-radius:10px;object-fit:cover;background:#F0F2F5;flex:0 0 92px}
.row .info{flex:1;min-width:0;display:flex;flex-direction:column}
.row .name{font-size:15px;font-weight:600;line-height:1.35;margin:0}
.row .desc{font-size:12px;color:var(--muted);margin:4px 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between}
.price{color:var(--price);font-weight:700}
.price small{font-size:11px;font-weight:600;margin-right:1px}
.price .old{color:#B4B9C1;font-weight:400;font-size:12px;text-decoration:line-through;margin-left:6px}
.add{width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;font-size:20px;line-height:28px;text-align:center;flex:0 0 30px}
.add.disabled{background:#C9CED6}

/* 底部 tab */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);display:flex;padding:6px 0 calc(6px + env(safe-area-inset-bottom))}
.tabbar a{flex:1;text-align:center;font-size:11px;color:#8A8F99;position:relative}
.tabbar a.on{color:var(--blue);font-weight:600}
.tabbar .ico{display:block;font-size:19px;line-height:1.4}
.badge{position:absolute;top:-2px;right:50%;transform:translateX(22px);background:var(--price);color:#fff;font-size:10px;min-width:16px;height:16px;line-height:16px;border-radius:8px;padding:0 4px}

/* 详情 */
.detail-pic{width:100%;aspect-ratio:1/1;object-fit:cover;background:#F0F2F5}
.card{background:#fff;border-radius:var(--radius);margin:12px;padding:14px}
.card h3{margin:0 0 8px;font-size:15px}
.spec{display:inline-block;padding:6px 12px;border-radius:8px;border:1px solid var(--line);font-size:13px;margin:0 8px 8px 0;background:#FAFBFC}
.spec.on{border-color:var(--blue);color:var(--blue);background:#EEF3FE;font-weight:600}
.stepper{display:flex;align-items:center;gap:10px}
.stepper button{width:28px;height:28px;border-radius:50%;background:#F0F2F5;color:#333;font-size:18px;line-height:26px}
.stepper span{min-width:28px;text-align:center;font-weight:600}

/* 结算条 */
.buybar{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:10px 14px calc(10px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:12px;z-index:45}
.buybar .sum{flex:1}
.buybar .sum b{color:var(--price);font-size:18px}
.btn-primary{background:var(--blue);color:#fff;border-radius:24px;padding:12px 26px;font-size:15px;font-weight:600}
.btn-primary.wide{width:100%;text-align:center}
.btn-ghost{border:1px solid var(--blue);color:var(--blue);border-radius:24px;padding:10px 18px;font-size:14px}

/* 购物车 */
.citem{display:flex;gap:12px;background:#fff;border-radius:var(--radius);padding:12px;margin-bottom:10px;align-items:center}
.citem img{width:64px;height:64px;border-radius:10px;object-fit:cover;background:#F0F2F5}
.citem .t{flex:1;min-width:0}
.citem .t p{margin:0;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.citem .t .p{color:var(--price);font-weight:700;font-size:14px;margin-top:4px}
.empty{text-align:center;color:var(--muted);padding:60px 0;font-size:14px}

/* 表单 */
.field{display:flex;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--line)}
.field:last-child{border-bottom:0}
.field label{width:74px;color:#5A6069;font-size:14px;flex:0 0 74px}
.field input,.field select,.field textarea{flex:1;border:0;outline:0;font:inherit;background:transparent;color:var(--text);min-width:0}
.field textarea{resize:none}
.region{display:flex;gap:8px;flex:1}
.region select{flex:1;border:0;background:transparent;font:inherit;color:var(--text)}
.total-line{display:flex;justify-content:space-between;font-size:14px;padding:8px 0;color:#4A4F57}
.total-line b{color:var(--price);font-size:17px}

/* 订单 */
.order{background:#fff;border-radius:var(--radius);margin-bottom:10px;padding:12px 14px}
.order .hd{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}
.order .bd{margin:8px 0;font-size:14px}
.order .ft{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-top:10px;margin-top:6px}
.st{font-size:12px;padding:2px 8px;border-radius:6px;background:#F0F2F5;color:#5A6069}
.st.paid{background:#E8F7EE;color:#0E8A45}
.st.unpaid{background:#FFF3E6;color:#B26A00}
.st.shipped{background:#EAF2FF;color:#1E5FD0}
.toast{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.78);color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;z-index:99;opacity:0;transition:.2s;pointer-events:none}
.toast.show{opacity:1}