:root{
  --brand:#c0392b; --brand-dark:#96291d; --brand-soft:#fdf1ef;
  --bg:#f4f5f7; --paper:#fff; --ink:#1a1d23; --ink2:#565e6c; --ink3:#8b93a1;
  --line:#e6e9ee; --line2:#f0f2f5;
  --ok:#0f8a5f; --ok-soft:#e9f7f1;
  --warn:#b7791f; --warn-soft:#fdf6e7;
  --danger:#c0392b; --danger-soft:#fdf1ef;
  --blue:#1f6feb; --blue-soft:#eef4ff;
  --r:10px; --r-lg:14px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 4px 12px rgba(16,24,40,.05);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:14px;color:var(--ink);width:100%;
  padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:#fff;outline:none;transition:border-color .15s}
input:focus,select:focus,textarea:focus{border-color:var(--brand)}
textarea{resize:vertical;min-height:70px}
label{display:block;font-size:12.5px;color:var(--ink3);margin-bottom:5px}
.mono{font-family:Consolas,"SFMono-Regular",monospace}
.hide{display:none !important}
.muted{color:var(--ink3)}
.center{text-align:center}
.right{text-align:right}
.row{display:flex;align-items:center;gap:10px}
.row.wrap{flex-wrap:wrap}
.spacer{flex:1}
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}
.fs12{font-size:12px}.fs13{font-size:13px}.fs18{font-size:18px}.fs22{font-size:22px}
.bold{font-weight:600}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 16px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink2);
  font-size:13.5px;font-weight:500;transition:.15s;white-space:nowrap}
.btn:hover{border-color:#d3d8e0;background:#fafbfc}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn-ok{background:var(--ok);border-color:var(--ok);color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--brand)}
.btn-sm{padding:5px 10px;font-size:12.5px;border-radius:7px}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn-danger{color:var(--danger);border-color:#f1c9c4;background:#fff}

/* ---------- 卡片 ---------- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px}
.card.tight{padding:14px 16px}
.card-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:10px}
.card-h h3{font-size:15px;font-weight:600}
.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}
.kpi{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.kpi .k{font-size:12px;color:var(--ink3);margin-bottom:6px}
.kpi .v{font-size:22px;font-weight:600;letter-spacing:-.5px;line-height:1.2}
.kpi .v small{font-size:12px;font-weight:400;color:var(--ink3);margin-left:2px}
.kpi.accent{border-color:#f1cfc9;background:var(--brand-soft)}

/* ---------- 表格 ---------- */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{text-align:left;padding:9px 10px;color:var(--ink3);font-weight:500;font-size:12px;
  border-bottom:1px solid var(--line);background:#fafbfc;white-space:nowrap}
.table td{padding:10px;border-bottom:1px solid var(--line2);vertical-align:middle}
.table tr:hover td{background:#fcfcfd}
.table .num{text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 徽标 ---------- */
.badge{display:inline-block;font-size:11.5px;padding:2px 8px;border-radius:5px;font-weight:500;white-space:nowrap}
.b-pending{background:var(--warn-soft);color:var(--warn)}
.b-doing{background:var(--blue-soft);color:var(--blue)}
.b-done{background:var(--ok-soft);color:var(--ok)}
.b-cancel{background:#f2f4f7;color:var(--ink3)}
.b-red{background:var(--danger-soft);color:var(--danger)}

/* ---------- 骨架：后台 ---------- */
.shell{display:flex;min-height:100vh}
.side{width:196px;flex:0 0 196px;background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.side .brand{padding:18px 18px 14px;border-bottom:1px solid var(--line2)}
.side .brand b{font-size:15px;display:block;letter-spacing:-.2px}
.side .brand span{font-size:11.5px;color:var(--ink3)}
.side nav{padding:10px 8px;overflow-y:auto;flex:1}
.side nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:8px;
  color:var(--ink2);font-size:13.5px;margin-bottom:2px}
.side nav a:hover{background:#f7f8fa}
.side nav a.on{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side nav a .ic{width:18px;text-align:center;font-size:14px;opacity:.85}
.side .foot{padding:12px 16px;border-top:1px solid var(--line2);font-size:12px;color:var(--ink3)}
.main{flex:1;min-width:0;padding:22px 26px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;gap:12px}
.topbar h1{font-size:19px;font-weight:600;letter-spacing:-.3px}
.topbar .sub{font-size:12.5px;color:var(--ink3);margin-top:2px}

/* ---------- 弹层 ---------- */
.mask{position:fixed;inset:0;background:rgba(16,24,40,.45);display:flex;align-items:center;
  justify-content:center;padding:18px;z-index:60}
.modal{background:#fff;border-radius:var(--r-lg);width:100%;max-width:520px;max-height:88vh;
  overflow:auto;box-shadow:0 12px 40px rgba(16,24,40,.18)}
.modal-h{padding:16px 20px;border-bottom:1px solid var(--line2);display:flex;align-items:center;justify-content:space-between}
.modal-h h3{font-size:16px;font-weight:600}
.modal-b{padding:18px 20px}
.modal-f{padding:14px 20px;border-top:1px solid var(--line2);display:flex;gap:10px;justify-content:flex-end}
.x{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--ink3);font-size:18px;line-height:1}
.x:hover{background:#f4f5f7}
#toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%);z-index:99;display:flex;
  flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:rgba(26,29,35,.92);color:#fff;padding:9px 18px;border-radius:20px;font-size:13px;
  animation:tin .18s ease-out}
@keyframes tin{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 已收款章 ---------- */
.order-card{position:relative;overflow:hidden}
.stamp{position:absolute;right:12px;top:16px;transform:rotate(-14deg);
  border:2.5px solid rgba(192,57,43,.62);color:rgba(192,57,43,.72);border-radius:6px;
  padding:3px 10px;font-size:15px;font-weight:700;letter-spacing:3px;opacity:.9;
  pointer-events:none;z-index:2}

/* ---------- 订单卡 ---------- */
.order-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.ord{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:14px 16px}
.ord.new{border-color:#f0c9c2;box-shadow:0 0 0 3px var(--brand-soft)}
.ord .oh{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;margin-bottom:10px}
.ord .no{font-size:20px;font-weight:700;letter-spacing:-.5px;line-height:1.1}
.ord .tb{font-size:12.5px;color:var(--ink3);margin-top:3px}
.ord .items{border-top:1px dashed var(--line);padding-top:9px;font-size:13px}
.ord .it{display:flex;justify-content:space-between;padding:2.5px 0;color:var(--ink2)}
.ord .it .rm{color:var(--brand);font-size:12px;margin-left:6px}
.ord .of{display:flex;align-items:center;justify-content:space-between;margin-top:11px;
  border-top:1px dashed var(--line);padding-top:10px}
.ord .amt{font-size:17px;font-weight:600}
.ord .acts{display:flex;gap:8px;margin-top:11px}
.ord .acts .btn{flex:1}

/* ---------- 小票 ---------- */
.receipt{width:270px;background:#fff;border:1px solid var(--line);border-radius:8px;
  padding:16px 14px 18px;font-family:Consolas,"SFMono-Regular",monospace;font-size:12px;color:#111;
  margin:0 auto}
.receipt .store{text-align:center;font-size:13.5px;font-weight:600;letter-spacing:.5px}
.receipt .bigno{text-align:center;font-size:32px;font-weight:700;letter-spacing:2px;line-height:1.2;margin:2px 0 6px}
.receipt .addon{text-align:center;font-size:11.5px;color:#8b93a1;margin-bottom:6px}
.receipt .hr{border-top:1px dashed #bbb;margin:8px 0}
.receipt .l{display:flex;justify-content:space-between;line-height:1.85}
.receipt .l span:first-child{color:#666}
.receipt .col{display:flex;font-size:11.5px;color:#666;line-height:1.8}
.receipt .col .n{flex:1}
.receipt .col .q{width:40px;text-align:right}
.receipt .col .a{width:58px;text-align:right}
.receipt .rm{padding-left:8px;color:#666;font-size:11.5px;line-height:1.7}
.receipt .total{display:flex;justify-content:space-between;font-size:13.5px;font-weight:700;line-height:1.9}
.receipt .tip{text-align:center;line-height:1.9}

/* ---------- 移动端后台 ---------- */
@media(max-width:860px){
  .shell{display:block}
  .side{width:100%;height:auto;position:sticky;top:0;z-index:40;border-right:none;border-bottom:1px solid var(--line)}
  .side .brand{padding:12px 14px 8px;display:flex;align-items:baseline;gap:8px}
  .side .brand b{font-size:14px}
  .side nav{display:flex;overflow-x:auto;padding:6px 8px 8px;gap:4px;flex:none}
  .side nav a{margin:0;white-space:nowrap;padding:7px 11px;font-size:12.5px}
  .side nav a .ic{display:none}
  .side .foot{display:none}
  .main{padding:14px 14px 50px}
  .topbar h1{font-size:17px}
  .order-list{grid-template-columns:1fr}
  .card{padding:14px}
}