/* ============ 后台基础样式 ============ */
:root{
  --pri:#2563eb; --pri-d:#1d4ed8; --pri-l:#eff4ff;
  --ok:#0ca678; --warn:#f59f00; --err:#e03131;
  --tx:#1f2937; --tx2:#6b7280; --tx3:#9ca3af;
  --bd:#e8ecf3; --bg:#f4f6fb; --side:#141c2f;
  --r:10px; --sh:0 1px 3px rgba(16,24,40,.06),0 8px 24px rgba(16,24,40,.04);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--tx);
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
input,select,textarea,button{font-family:inherit;font-size:14px}

/* ============ 侧边栏 ============ */
.side{position:fixed;left:0;top:0;bottom:0;width:220px;background:var(--side);
  display:flex;flex-direction:column;z-index:20}
.logo{display:flex;align-items:center;gap:10px;padding:20px 18px 18px;color:#fff}
.logo .dot{width:30px;height:30px;border-radius:9px;flex:0 0 30px;
  background:linear-gradient(135deg,#3b82f6,#60a5fa);box-shadow:0 4px 12px rgba(59,130,246,.4)}
.logo b{display:block;font-size:15px;font-weight:600;letter-spacing:.3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}
.logo small{color:#6b7a99;font-size:11.5px}
.nav{flex:1;overflow-y:auto;padding:4px 10px 24px}
.nav::-webkit-scrollbar{width:4px}
.nav::-webkit-scrollbar-thumb{background:#2a3550;border-radius:4px}
.nav-i{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:8px;
  color:#94a3b8;font-size:13.5px;cursor:pointer;margin-bottom:2px;transition:.15s}
.nav-i:hover{background:#1d2740;color:#dbe3f0}
.nav-i.on{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:500;
  box-shadow:0 4px 12px rgba(37,99,235,.35)}
.nav-t .arr{margin-left:auto;width:0;height:0;border:4px solid transparent;
  border-left-color:#5b6885;transition:.2s}
.nav-g.open .nav-t .arr{transform:rotate(90deg) translateX(-2px)}
.nav-g .sub{display:none;padding:2px 0 6px 30px}
.nav-g.open .sub{display:block}
.nav-g .sub a{display:block;padding:7px 12px;border-radius:7px;color:#7c8aa5;font-size:13px;margin-bottom:1px}
.nav-g .sub a:hover{color:#cbd5e1;background:#1d2740}
.nav-g .sub a.on{color:#fff;background:#1e40af}
.ic{width:16px;height:16px;flex:0 0 16px;opacity:.9;
  background:currentColor;-webkit-mask-size:contain;mask-size:contain;
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}
.ic-chart{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M4 20h3V10H4v10zm6.5 0h3V4h-3v16zm6.5 0h3v-7h-3v7z'/%3E%3C/svg%3E")}
.ic-order{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M6 2h9l5 5v15H6V2zm8 1.5V8h4.5L14 3.5zM8 12h8v1.5H8V12zm0 4h8v1.5H8V16z'/%3E%3C/svg%3E")}
.ic-price{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2a10 10 0 100 20 10 10 0 000-20zm1 15h-2v-1.2c-1.5-.2-2.6-1-2.8-2.4h1.8c.1.6.7 1 1.9 1 1.1 0 1.7-.4 1.7-1s-.4-.9-1.9-1.2c-2-.4-3.2-1.1-3.2-2.6 0-1.3 1-2.2 2.5-2.4V6h2v1.2c1.4.2 2.4 1 2.6 2.3h-1.8c-.1-.5-.6-.9-1.6-.9-1 0-1.6.4-1.6.9 0 .6.5.8 2 1.1 2 .4 3.1 1.1 3.1 2.7 0 1.4-1 2.3-2.7 2.5V17z'/%3E%3C/svg%3E")}
.ic-city{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 2C8.1 2 5 5.1 5 9c0 5.2 7 13 7 13s7-7.8 7-13c0-3.9-3.1-7-7-7zm0 9.5A2.5 2.5 0 1112 6.5a2.5 2.5 0 010 5z'/%3E%3C/svg%3E")}
.ic-text{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M3 5h18v3h-7v11h-4V8H3V5z'/%3E%3C/svg%3E")}
.ic-doc{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M4 3h16v18H4V3zm3 4v2h10V7H7zm0 4v2h10v-2H7zm0 4v2h6v-2H7z'/%3E%3C/svg%3E")}
.ic-user{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 12a5 5 0 100-10 5 5 0 000 10zm0 2c-4.4 0-8 2.2-8 5v3h16v-3c0-2.8-3.6-5-8-5z'/%3E%3C/svg%3E")}
.ic-api{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M9.4 16.6L4.8 12l4.6-4.6L8 6l-6 6 6 6 1.4-1.4zm5.2 0l4.6-4.6-4.6-4.6L16 6l6 6-6 6-1.4-1.4z'/%3E%3C/svg%3E")}
.ic-setting{-webkit-mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23000'%3E%3Cpath d='M12 8a4 4 0 100 8 4 4 0 000-8zm9 4c0-.6-.1-1.2-.2-1.8l2-1.5-2-3.4-2.3 1a8 8 0 00-3-1.7L15 2H9l-.5 2.6a8 8 0 00-3 1.7l-2.3-1-2 3.4 2 1.5a8.6 8.6 0 000 3.6l-2 1.5 2 3.4 2.3-1a8 8 0 003 1.7L9 22h6l.5-2.6a8 8 0 003-1.7l2.3 1 2-3.4-2-1.5c.1-.6.2-1.2.2-1.8z'/%3E%3C/svg%3E")}

/* ============ 主区 ============ */
.main{margin-left:220px;min-height:100vh;display:flex;flex-direction:column}
.top{height:58px;background:#fff;border-bottom:1px solid var(--bd);display:flex;
  align-items:center;padding:0 22px;position:sticky;top:0;z-index:10}
.top h1{margin:0;font-size:16px;font-weight:600}
.top-r{margin-left:auto;display:flex;align-items:center;gap:16px;font-size:13px;color:var(--tx2)}
.top-r .who{color:var(--tx);font-weight:500}
.top-r .link:hover{color:var(--pri)}
.top-r .danger:hover{color:var(--err)}
.body{padding:20px 22px 40px;flex:1}

/* ============ 卡片/面板 ============ */
.card{background:#fff;border-radius:var(--r);box-shadow:var(--sh);margin-bottom:16px}
.card-h{padding:15px 18px;border-bottom:1px solid var(--bd);display:flex;align-items:center;gap:12px}
.card-h h3{margin:0;font-size:15px;font-weight:600}
.card-h .r{margin-left:auto;display:flex;gap:8px;align-items:center}
.card-b{padding:18px}
.tips{background:#f0f7ff;border:1px solid #d6e6ff;color:#1e5bb8;border-radius:8px;
  padding:10px 14px;font-size:13px;margin-bottom:16px;line-height:1.7}
.tips code{background:#dbeafe;padding:1px 6px;border-radius:4px;font-size:12.5px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;height:34px;padding:0 15px;
  border:1px solid var(--bd);background:#fff;color:var(--tx);border-radius:8px;cursor:pointer;
  transition:.15s;white-space:nowrap;font-size:13.5px}
.btn:hover{border-color:var(--pri);color:var(--pri)}
.btn-p{background:var(--pri);border-color:var(--pri);color:#fff}
.btn-p:hover{background:var(--pri-d);border-color:var(--pri-d);color:#fff}
.btn-d{color:var(--err);border-color:#fadcdc}
.btn-d:hover{background:var(--err);border-color:var(--err);color:#fff}
.btn-s{height:28px;padding:0 10px;font-size:12.5px;border-radius:6px}
.btn[disabled]{opacity:.5;pointer-events:none}

/* ============ 表单 ============ */
.form-i{display:flex;padding:14px 0;border-bottom:1px solid #f1f4f9}
.form-i:last-child{border-bottom:0}
.form-i .lb{width:180px;flex:0 0 180px;padding-top:7px;font-size:13.5px;color:var(--tx2)}
.form-i .lb b{color:var(--tx);font-weight:500;display:block}
.form-i .lb .req{color:var(--err);margin-left:3px}
.form-i .lb small{color:var(--tx3);font-size:12px;display:block;margin-top:3px;line-height:1.5}
.form-i .ct{flex:1;min-width:0}
.inp,textarea.inp,select.inp{width:100%;max-width:520px;height:36px;padding:0 11px;border:1px solid var(--bd);
  border-radius:8px;outline:0;transition:.15s;background:#fff;color:var(--tx)}
textarea.inp{height:auto;min-height:92px;padding:9px 11px;line-height:1.6;resize:vertical;font-family:inherit}
.inp:focus{border-color:var(--pri);box-shadow:0 0 0 3px var(--pri-l)}
.inp[readonly]{background:#f7f9fc;color:var(--tx2)}
.inp.mono{font-family:ui-monospace,Consolas,Monaco,monospace;font-size:12.5px}
.f-tip{color:var(--tx3);font-size:12px;margin-top:5px}

/* 开关 */
.sw{position:relative;display:inline-block;width:44px;height:24px;vertical-align:middle}
.sw input{opacity:0;width:0;height:0}
.sw i{position:absolute;inset:0;background:#d8dee9;border-radius:24px;transition:.2s;cursor:pointer}
.sw i:before{content:"";position:absolute;width:18px;height:18px;left:3px;top:3px;
  background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.sw input:checked + i{background:var(--pri)}
.sw input:checked + i:before{transform:translateX(20px)}

/* 图片上传 */
.up{display:flex;align-items:center;gap:12px}
.up-box{width:88px;height:88px;border:1px dashed #cdd5e2;border-radius:10px;display:flex;
  align-items:center;justify-content:center;cursor:pointer;color:var(--tx3);background:#fafbfe;
  overflow:hidden;position:relative;font-size:24px}
.up-box:hover{border-color:var(--pri);color:var(--pri)}
.up-box img{width:100%;height:100%;object-fit:contain}

/* 颜色选择 */
.color-w{display:flex;align-items:center;gap:10px}
.color-w input[type=color]{width:42px;height:34px;border:1px solid var(--bd);border-radius:8px;
  padding:2px;background:#fff;cursor:pointer}
.color-w .inp{max-width:140px}

/* ============ 表格 ============ */
.tb-wrap{overflow-x:auto}
table.tb{width:100%;border-collapse:collapse;font-size:13.5px}
table.tb th{background:#fafbfe;color:var(--tx2);font-weight:500;text-align:left;
  padding:11px 14px;border-bottom:1px solid var(--bd);white-space:nowrap;font-size:13px}
table.tb td{padding:12px 14px;border-bottom:1px solid #f2f5f9;vertical-align:middle}
table.tb tr:last-child td{border-bottom:0}
table.tb tbody tr:hover{background:#fafcff}
table.tb td.ops{white-space:nowrap}
table.tb td.ops a{color:var(--pri);margin-right:12px;font-size:13px}
table.tb td.ops a.del{color:var(--err)}
.thumb{width:36px;height:36px;border-radius:7px;object-fit:cover;background:#f2f5f9;vertical-align:middle}
.empty{text-align:center;padding:60px 20px;color:var(--tx3)}
.empty .em{font-size:40px;opacity:.35;margin-bottom:10px}

/* 标签 */
.tag{display:inline-block;padding:2px 9px;border-radius:5px;font-size:12px;line-height:19px;
  background:#f1f4f9;color:var(--tx2);white-space:nowrap}
.tag-ok{background:#e6f7f1;color:#0b8a63}
.tag-warn{background:#fff6e0;color:#b47500}
.tag-err{background:#ffeeee;color:#cf3636}
.tag-pri{background:var(--pri-l);color:var(--pri)}
.money{color:#e8590c;font-weight:600}

/* 搜索栏 */
.bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:0}
.bar .inp{width:200px;max-width:none;height:34px}
.bar select.inp{width:auto;min-width:120px}
.bar .sp{margin-left:auto}

/* 分页 */
.pager{display:flex;gap:6px;align-items:center;justify-content:flex-end;padding:14px 18px;
  border-top:1px solid var(--bd);font-size:13px;color:var(--tx2)}
.pager a,.pager span.pg{min-width:32px;height:32px;padding:0 9px;border:1px solid var(--bd);
  border-radius:7px;display:inline-flex;align-items:center;justify-content:center;background:#fff}
.pager a:hover{border-color:var(--pri);color:var(--pri)}
.pager .cur{background:var(--pri);border-color:var(--pri);color:#fff}

/* ============ 概览卡片 ============ */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:16px}
.stat{background:#fff;border-radius:var(--r);padding:18px;box-shadow:var(--sh);position:relative;overflow:hidden}
.stat .t{color:var(--tx2);font-size:13px}
.stat .v{font-size:27px;font-weight:600;margin-top:6px;letter-spacing:-.5px}
.stat .s{font-size:12px;color:var(--tx3);margin-top:4px}
.stat:after{content:"";position:absolute;right:-24px;top:-24px;width:78px;height:78px;border-radius:50%;
  background:var(--pri-l);opacity:.7}
.stat.g:after{background:#e6f7f1}
.stat.o:after{background:#fff4e6}
.stat.r:after{background:#ffeeee}

/* 图表 */
.chart{height:230px;display:flex;align-items:flex-end;gap:6px;padding:12px 4px 0}
.chart .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px}
.chart .bar-i{width:100%;max-width:34px;border-radius:6px 6px 0 0;
  background:linear-gradient(180deg,#60a5fa,#2563eb);min-height:3px;transition:.3s;position:relative}
.chart .bar-i:hover{filter:brightness(1.12)}
.chart .lb{font-size:11px;color:var(--tx3);white-space:nowrap}
.chart .vl{font-size:11px;color:var(--tx2)}

/* ============ Toast / 弹窗 ============ */
.toast{position:fixed;left:50%;top:70px;transform:translateX(-50%) translateY(-16px);
  background:rgba(25,32,48,.93);color:#fff;padding:10px 20px;border-radius:9px;font-size:13.5px;
  opacity:0;pointer-events:none;transition:.22s;z-index:999;max-width:80vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:#d13b3b}

.mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;z-index:100;
  align-items:center;justify-content:center;padding:20px}
.mask.show{display:flex}
.modal{background:#fff;border-radius:14px;width:100%;max-width:560px;max-height:88vh;
  display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal h3{margin:0;padding:16px 20px;border-bottom:1px solid var(--bd);font-size:15px}
.modal .mb{padding:18px 20px;overflow-y:auto;flex:1}
.modal .mf{padding:14px 20px;border-top:1px solid var(--bd);display:flex;gap:10px;justify-content:flex-end}

/* ============ 阶梯编辑器 ============ */
.tiers{max-width:620px}
.tier{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.tier .inp{max-width:none;flex:1;height:34px}
.tier .u{color:var(--tx3);font-size:12.5px;white-space:nowrap}
.tier .rm{color:var(--err);cursor:pointer;font-size:18px;line-height:1;padding:0 4px}

/* ============ 订单详情 ============ */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:1000px){.grid2{grid-template-columns:1fr}}
.kv{display:flex;padding:8px 0;font-size:13.5px;border-bottom:1px solid #f4f7fb}
.kv:last-child{border-bottom:0}
.kv .k{width:120px;flex:0 0 120px;color:var(--tx2)}
.kv .v{flex:1;min-width:0;word-break:break-all}
.steps{position:relative;padding-left:20px}
.steps:before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:2px;background:#eaeef5}
.step{position:relative;padding:8px 0 14px}
.step:before{content:"";position:absolute;left:-20px;top:13px;width:10px;height:10px;border-radius:50%;
  background:#cbd5e1;border:2px solid #fff;box-shadow:0 0 0 2px #eaeef5}
.step:first-child:before{background:var(--pri);box-shadow:0 0 0 2px var(--pri-l)}
.step .t{font-weight:500;font-size:13.5px}
.step .d{color:var(--tx2);font-size:12.5px;margin-top:2px}
.step .ti{color:var(--tx3);font-size:12px;margin-top:2px}

/* ============ 登录页 ============ */
.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0f172a 0%,#1e3a8a 55%,#2563eb 100%);padding:20px}
.login-box{background:#fff;border-radius:18px;padding:38px 36px;width:100%;max-width:392px;
  box-shadow:0 24px 70px rgba(0,0,0,.3)}
.login-box .lg{text-align:center;margin-bottom:26px}
.login-box .lg .dot{width:50px;height:50px;border-radius:15px;margin:0 auto 12px;
  background:linear-gradient(135deg,#2563eb,#60a5fa);box-shadow:0 8px 22px rgba(37,99,235,.35)}
.login-box .lg h2{margin:0;font-size:19px}
.login-box .lg p{margin:5px 0 0;color:var(--tx3);font-size:13px}
.login-box .fi{margin-bottom:14px}
.login-box .inp{max-width:none;height:44px}
.login-box .btn{width:100%;height:44px;font-size:15px;margin-top:8px}
.login-err{background:#ffeeee;color:#cf3636;border-radius:8px;padding:9px 12px;
  font-size:13px;margin-bottom:14px}

/* ============ 代码块 ============ */
pre.code{background:#0f172a;color:#cbd5e1;border-radius:10px;padding:16px;overflow-x:auto;
  font:12.5px/1.75 ui-monospace,Consolas,Monaco,monospace;margin:0 0 14px}
pre.code .k{color:#7dd3fc}
.doc h4{margin:24px 0 10px;font-size:14.5px;padding-left:9px;border-left:3px solid var(--pri)}
.doc h4:first-child{margin-top:0}
.doc p{color:var(--tx2);font-size:13.5px;margin:0 0 10px}
.doc table.tb th{background:#f7f9fd}

@media(max-width:920px){
  .side{transform:translateX(-100%);transition:.25s}
  .side.show{transform:none}
  .main{margin-left:0}
  .form-i{flex-direction:column}
  .form-i .lb{width:auto;flex:none;padding-bottom:7px}
}