:root{
  --bg:#f4f6fb; --card:#fff; --fg:#0f172a; --muted:#6b7280; --line:#e5e7eb;
  --brand:#2563eb; --brand-d:#1d4ed8; --danger:#dc2626; --danger-bg:#fef2f2;
  --ok:#059669; --warn:#d97706; --radius:14px;
  /* 正文栏最大 720px；通栏元素（顶栏/预警条）用它对齐，避免桌面下"窄条 + 通栏"脱节 */
  --gutter:max(14px, calc((100% - 720px) / 2));
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--fg); font-size:16px; line-height:1.5;
  padding-bottom:env(safe-area-inset-bottom);
}
.hidden{display:none !important}
.muted{color:var(--muted)}
.tiny{font-size:12px}
h1{font-size:22px;margin:0 0 8px}
button{font-family:inherit;font-size:15px}

/* 登录 */
.gate{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.gate-card{background:var(--card);border-radius:18px;padding:26px 22px;width:100%;max-width:360px;box-shadow:0 10px 30px rgba(15,23,42,.08)}
.gate-card input{width:100%;margin:8px 0}
input,select{
  font-family:inherit;font-size:16px;padding:11px 12px;border:1px solid var(--line);
  border-radius:10px;background:#fff;color:var(--fg);width:100%;
}
input:focus,select:focus{outline:2px solid #bfdbfe;border-color:var(--brand)}

/* 顶栏 */
.topbar{
  position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);
  padding:calc(env(safe-area-inset-top) + 10px) var(--gutter) 10px;display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.topbar-l{display:flex;align-items:center;gap:8px;min-width:0;flex:1}
.topbar-l strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pick{width:auto;max-width:150px;padding:6px 8px;font-size:14px;border-radius:8px}
.icon-btn{background:none;border:none;color:var(--muted);font-size:14px;padding:6px}

/* 预警条 */
.alert{background:var(--danger);color:#fff;padding:11px var(--gutter);font-size:15px;font-weight:600;text-align:center;line-height:1.45}
.alert.warn{background:var(--warn)}

main{padding:14px;max-width:720px;margin:0 auto}
.card{background:var(--card);border-radius:var(--radius);padding:14px;margin-bottom:12px;box-shadow:0 1px 3px rgba(15,23,42,.06)}
.card-head{display:flex;align-items:center;justify-content:space-between;font-weight:600;margin-bottom:10px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.row2 .card{margin-bottom:12px}
.label{color:var(--muted);font-size:13px}
.num{font-size:20px;font-weight:700;margin-top:4px}

/* 余额 */
.balance-card{text-align:center;padding:22px 14px}
.balance{font-size:44px;font-weight:800;letter-spacing:-1px;margin:6px 0}
.balance-card.low{background:var(--danger-bg);border:1px solid #fecaca}
.balance-card.low .balance{color:var(--danger)}
.balance-card.ok .balance{color:var(--ok)}
.balance-card.low .label::after{content:"　⚠️ 余额不足"}

.quick{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.btn{background:#eef2ff;color:#1e3a8a;border:none;border-radius:10px;padding:12px;font-weight:600;cursor:pointer}
.btn:active{transform:scale(.985)}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:active{background:var(--brand-d)}
.btn.wide{width:100%;margin-top:10px}
.btn.tiny-btn{padding:5px 10px;font-size:13px;font-weight:500}
.btn.ghost{background:#f3f4f6;color:var(--fg)}
.btn.danger{background:#fee2e2;color:var(--danger)}

/* 列表 */
.list{display:flex;flex-direction:column}
.item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid #f1f5f9}
.item:last-child{border-bottom:none}
.item .l{min-width:0}
.item .t{font-weight:600;font-size:15px}
.item .s{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:190px}
.amt{font-weight:700;white-space:nowrap}
.amt.plus{color:var(--ok)}
.amt.minus{color:var(--danger)}
.item .ops{display:flex;gap:6px}
.item .ops button{background:#f3f4f6;border:none;border-radius:8px;padding:6px 9px;font-size:13px;color:#374151}

.tag{background:#eef2ff;color:#1e3a8a;border-radius:20px;padding:1px 9px;font-size:12px;font-weight:600}
.tag.due{background:#fef3c7;color:#92400e}
.empty{color:var(--muted);font-size:14px;text-align:center;padding:14px 0}

/* 表单 */
.field{display:block;margin-bottom:10px}
.field>span{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
.types{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.types button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 4px;font-size:14px;cursor:pointer}
.types button.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.filters{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}

/* 报表表 */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px 6px;text-align:right;border-bottom:1px solid #f1f5f9}
th:first-child,td:first-child{text-align:left}
th{color:var(--muted);font-weight:600;font-size:12px}
td.red{color:var(--danger)}

/* 底部导航：白底通栏 + 内容与正文栏对齐 */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:20;background:#fff;
  border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);max-width:720px;margin:0 auto}
.tabbar button{background:none;border:none;padding:12px 2px;font-size:13px;color:var(--muted)}
.tabbar button.on{color:var(--brand);font-weight:700}
#app{padding-bottom:78px}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.45);display:flex;align-items:center;justify-content:center;padding:16px;z-index:50}
.modal-card{background:#fff;border-radius:16px;padding:18px;width:100%;max-width:420px;max-height:86vh;overflow:auto}
.modal-card h3{margin:0 0 10px;font-size:17px}
.modal-ops{display:flex;gap:8px;margin-top:12px}
.modal-ops .btn{flex:1}
pre.copybox{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:12px;white-space:pre-wrap;font-size:14px;font-family:inherit;margin:0}
#invoicePreview img{max-width:100%;border-radius:10px;margin-top:8px}
.thumb{width:34px;height:34px;object-fit:cover;border-radius:6px;border:1px solid var(--line)}