:root{
  /* 联邦风配色 (USWDS 风格) */
  --ink:#1b1b1b; --muted:#565c65; --faint:#71767a;
  --line:#dfe1e2; --line-strong:#a9aeb1;
  --bg:#f0f0f0; --panel:#ffffff;
  --navy:#162e51; --navy-2:#1a4480; --primary:#005ea2; --primary-dark:#1a4480;
  --gold:#ffbe2e; --gold-dark:#b8860b;
  --red:#b50909; --red-bright:#d83933;
  --green:#008817;
  --info-bg:#e7f6f8; --info-ink:#005ea2;
  --serif:'Merriweather',Georgia,'Songti SC','SimSun',serif;
  --sans:'Public Sans',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --focus:0 0 0 3px #2491ff;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45}
a{cursor:pointer;text-decoration:none;color:inherit}
small{color:var(--muted)}

/* ---------- 顶部官方提示条 ---------- */
.gov-banner{background:#f0f0f0;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--ink)}
.gov-banner__inner{max-width:1500px;margin:0 auto;padding:7px 24px;display:flex;align-items:center;gap:8px}
.gov-banner__shield{width:15px;height:15px;fill:var(--navy);flex-shrink:0}
.gov-banner__sep{color:var(--line-strong)}
.gov-banner__muted{color:var(--muted);letter-spacing:.3px}

/* ---------- 印章式抬头 ---------- */
.masthead{background:var(--navy);border-bottom:4px solid var(--gold);color:#fff;display:flex;align-items:center;gap:16px;padding:14px 24px}
.seal svg{width:50px;height:50px;display:block}
.masthead__title b{font-family:var(--serif);font-size:21px;font-weight:700;letter-spacing:.5px;display:block;line-height:1.2}
.masthead__title small{color:#a6b3c9;font-size:10.5px;letter-spacing:2px;font-weight:600}
.masthead__meta{margin-left:auto}
.masthead__badge{border:1px solid #4a6088;color:#cdd6e6;font-size:12px;font-weight:600;padding:5px 12px;letter-spacing:1px;text-transform:uppercase}

/* ---------- 主体布局 ---------- */
.layout{display:flex;align-items:flex-start;max-width:1500px;margin:0 auto;background:var(--panel);min-height:calc(100vh - 90px)}
.sidebar{width:236px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--line);align-self:stretch;display:flex;flex-direction:column}
#nav{display:flex;flex-direction:column;padding:14px 0}
#nav a{display:flex;align-items:center;gap:11px;padding:13px 20px;color:var(--ink);font-weight:500;border-left:4px solid transparent;transition:background .12s}
#nav a svg{width:18px;height:18px;color:var(--muted);flex-shrink:0}
#nav a:hover{background:#f0f0f0}
#nav a.active{background:#eff6fb;border-left-color:var(--primary);color:var(--navy-2);font-weight:700}
#nav a.active svg{color:var(--primary)}
.side-foot{margin-top:auto;padding:18px 20px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);line-height:1.7}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:20px 30px;background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topbar h1{font-family:var(--serif);font-size:23px;font-weight:700;color:var(--navy)}
.content{padding:26px 30px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid transparent;background:var(--primary);color:#fff;padding:10px 18px;border-radius:4px;font-size:14px;font-weight:700;font-family:var(--sans);cursor:pointer;transition:background .12s}
.btn:hover{background:var(--primary-dark)}
.btn:focus-visible{outline:none;box-shadow:var(--focus)}
.btn.ghost,.btn.line{background:#fff;border:2px solid var(--primary);color:var(--primary);padding:9px 16px}
.btn.ghost:hover,.btn.line:hover{background:#eff6fb}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.danger{background:#fff;border:2px solid var(--red);color:var(--red);padding:9px 16px}
.btn.danger:hover{background:#f9eeee}

/* ---------- 表单控件（方正） ---------- */
input,textarea{font-family:var(--sans);font-size:14px;padding:9px 11px;border:1px solid var(--muted);border-radius:0;background:#fff;color:var(--ink);width:100%;outline:none}
input:focus,textarea:focus{box-shadow:var(--focus);border-color:var(--primary)}
input[type=date]{padding:8px 11px}
label{display:block;font-size:13px;color:var(--ink);margin-bottom:5px;font-weight:600}
.field{margin-bottom:16px}
.row{display:flex;gap:14px}
.row>*{flex:1}

/* ---------- 卡片 / 面板 ---------- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:22px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:24px}
.stat{background:var(--panel);border:1px solid var(--line);border-left:6px solid var(--primary);border-radius:2px;padding:18px 20px;position:relative}
.stat .num{font-size:34px;font-weight:700;line-height:1.05;color:var(--navy)}
.stat .lbl{color:var(--muted);margin-top:4px;font-size:13px;font-weight:500}
.stat .ico{position:absolute;right:18px;top:18px;color:var(--primary);opacity:.85}
.stat .ico svg{width:26px;height:26px}
.stat.accent{border-left-color:var(--navy)}
.stat.accent .num{color:var(--navy)}
.stat.warn{border-left-color:var(--gold-dark)}
.stat.warn .num{color:var(--gold-dark)}
.stat.warn .ico{color:var(--gold-dark)}
.stat.danger{border-left-color:var(--red)}
.stat.danger .num{color:var(--red)}
.stat.danger .ico{color:var(--red)}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:12px 14px;vertical-align:middle}
th{font-size:12px;color:var(--ink);font-weight:700;text-transform:uppercase;letter-spacing:.4px;border-bottom:2px solid var(--muted);background:#f7f9fa}
td{border-bottom:1px solid var(--line);font-size:14px}
tbody tr:hover{background:#f7f9fa}
.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.section-title h2{font-family:var(--serif);font-size:17px;color:var(--navy)}

/* ---------- 标签 / 状态徽章（方正） ---------- */
.tag{display:inline-flex;align-items:center;gap:4px;padding:3px 9px;border-radius:2px;font-size:12px;font-weight:700;border:1px solid transparent}
.tag.cat{background:#eff6fb;color:var(--navy-2);border-color:#aacbe7}
.tag.s-待派单{background:#f0f0f0;color:var(--muted);border-color:var(--line-strong)}
.tag.s-已派单{background:var(--info-bg);color:var(--info-ink);border-color:#9bd3e0}
.tag.s-进行中{background:#fef3cd;color:#8a6b00;border-color:#e6c34a}
.tag.s-已完成{background:#ecf3ec;color:var(--green);border-color:#9ed29e}
.tag.s-待处理{background:#f0f0f0;color:var(--muted);border-color:var(--line-strong)}
.chip{display:inline-block;padding:2px 8px;border-radius:2px;background:#f0f0f0;border:1px solid var(--line);font-size:12px;margin:2px 4px 2px 0;color:var(--muted)}

/* ---------- 弹窗 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(27,27,27,.55);display:none;align-items:flex-start;justify-content:center;z-index:50;overflow:auto;padding:46px 16px}
.modal-mask.show{display:flex}
.modal{background:var(--panel);border-top:4px solid var(--gold);border-radius:3px;width:100%;max-width:780px;box-shadow:0 16px 40px rgba(20,28,60,.3)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid var(--line);background:#f7f9fa}
.modal-head h3{font-family:var(--serif);font-size:18px;color:var(--navy)}
.modal-body{padding:24px;max-height:70vh;overflow:auto}
.modal-foot{padding:16px 24px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:10px;background:#f7f9fa}
.x{font-size:24px;color:var(--muted);cursor:pointer;line-height:1}
.x:hover{color:var(--ink)}

/* ---------- 订单明细块 ---------- */
.item-card{border:1px solid var(--line);border-left:4px solid var(--line-strong);border-radius:2px;padding:18px;margin-bottom:16px;background:#fff}
.item-card .item-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.steps-edit{margin-top:14px;border-top:1px solid var(--line);padding-top:14px}
.step-row{display:grid;grid-template-columns:26px 1.2fr 1.4fr 1fr 1fr 28px;gap:9px;align-items:center;margin-bottom:9px}
.seq-badge{width:26px;height:26px;border-radius:2px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}

/* ---------- 订单详情 / 工序时间线 ---------- */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;margin-bottom:8px}
.detail-grid div{padding:9px 0;border-bottom:1px solid var(--line)}
.detail-grid b{color:var(--muted);font-weight:600;margin-right:8px;font-size:13px;text-transform:uppercase;letter-spacing:.3px}
.timeline{margin-top:6px}
.tl-step{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.tl-rail{display:flex;flex-direction:column;align-items:center}
.tl-node{width:28px;height:28px;border-radius:2px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;flex-shrink:0}
.tl-line{width:2px;flex:1;background:var(--line-strong);margin:4px 0}
.tl-body{flex:1}
.tl-body .tl-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.tl-meta{color:var(--muted);font-size:13px;margin-top:6px;display:flex;gap:18px;flex-wrap:wrap}
.tl-meta b{color:var(--ink);font-weight:700}
.overdue{color:var(--red);font-weight:700}
.empty{text-align:center;padding:54px;color:var(--muted);font-size:15px}
.link{color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:2px}
.link:hover{color:var(--primary-dark)}
.muted-row td{color:var(--muted)}
.progress{height:8px;background:#e6e6e6;border-radius:0;overflow:hidden;min-width:96px;border:1px solid var(--line)}
.progress i{display:block;height:100%;background:var(--green)}

.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--navy);color:#fff;padding:12px 22px;border-radius:3px;border-left:4px solid var(--gold);opacity:0;pointer-events:none;transition:.22s;z-index:99;font-size:14px;font-weight:600}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 纯色图标 ---------- */
.ic{width:1em;height:1em;display:inline-block;vertical-align:-.14em;fill:currentColor;flex-shrink:0}
.tl-meta .ic,.overdue .ic{width:14px;height:14px;vertical-align:-.2em}
td .ic{width:14px;height:14px;vertical-align:-.18em}

/* ---------- 站内下拉框组件（方正） ---------- */
.xselect{position:relative;width:100%}
.xselect-trigger{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 11px;border:1px solid var(--muted);border-radius:0;background:#fff;cursor:pointer;font-size:14px;line-height:1.3;user-select:none}
.xselect-trigger:hover{border-color:var(--primary)}
.xselect.open .xselect-trigger{box-shadow:var(--focus);border-color:var(--primary)}
.xselect-trigger.is-placeholder .xselect-label{color:var(--faint)}
.xselect-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.xselect-arrow{width:16px;height:16px;color:var(--muted);transition:transform .15s;flex-shrink:0;fill:currentColor}
.xselect.open .xselect-arrow{transform:rotate(180deg)}
.xselect-menu{position:fixed;display:none;background:#fff;border:1px solid var(--line-strong);border-radius:0;box-shadow:0 8px 22px rgba(20,28,60,.18);z-index:80;max-height:260px;overflow:auto;padding:0}
.xselect.open .xselect-menu{display:block}
.xselect-opt{padding:9px 12px;cursor:pointer;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-bottom:1px solid #f0f0f0}
.xselect-opt:last-child{border-bottom:none}
.xselect-opt:hover{background:#eff6fb}
.xselect-opt.sel{background:#eff6fb;color:var(--primary);font-weight:700;box-shadow:inset 3px 0 0 var(--primary)}

/* ============ 响应式：移动端适配 ============ */
@media (max-width:860px){
  html,body{overflow-x:hidden;max-width:100vw}
  body{font-size:14px}
  .layout,.main,.content,.cards{min-width:0;max-width:100%}
  .main,.content{overflow-x:hidden}
  .gov-banner__inner{padding:6px 14px;flex-wrap:wrap;gap:3px 8px;font-size:12px}
  .gov-banner__sep,.gov-banner__muted{display:none}

  .masthead{padding:11px 14px;gap:11px}
  .seal svg{width:40px;height:40px}
  .masthead__title b{font-size:17px;letter-spacing:.3px}
  .masthead__title small{font-size:8.5px;letter-spacing:1.2px}
  .masthead__meta{display:none}

  .layout{flex-direction:column;min-height:0;max-width:100%}
  .sidebar{width:100%;border-right:none;border-bottom:1px solid var(--line)}
  #nav{flex-direction:row;overflow-x:auto;padding:0;-webkit-overflow-scrolling:touch}
  #nav a{padding:12px 16px;border-left:none;border-bottom:3px solid transparent;white-space:nowrap}
  #nav a.active{border-left:none;border-bottom-color:var(--primary)}
  .side-foot{display:none}

  .topbar{padding:14px 16px;position:static;flex-wrap:wrap;gap:10px}
  .topbar h1{font-size:19px}
  .content{padding:16px}

  /* 卡片 */
  .cards{grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:18px}
  .stat .num{font-size:28px}

  /* 表格：横向滚动，避免挤压 */
  .panel{padding:14px;overflow-x:auto}
  table{min-width:600px}

  /* 弹窗：全屏 */
  .modal-mask{padding:0;align-items:stretch}
  .modal{max-width:100%;min-height:100vh;border-top:none}
  .modal-head{border-top:4px solid var(--gold)}
  .modal-body{max-height:none;padding:16px}
  .modal-head,.modal-foot{padding:14px 16px}

  /* 表单栅格收起 */
  .row{flex-direction:column;gap:0}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
  .section-title{flex-direction:column;align-items:flex-start;gap:10px}
  .section-title>div{display:flex;flex-wrap:wrap;gap:6px}

  /* 工序行：堆叠 */
  .step-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
  .step-row .seq-badge{flex:0 0 26px}
  .step-row>input{flex:1 1 100%}
  .step-row>input:first-of-type{flex:1 1 calc(100% - 36px)}
  .step-row>.xselect{flex:1 1 100%}
  .step-row>.xselect:last-of-type{flex:1 1 calc(100% - 38px)}
  .step-row>.x{flex:0 0 30px;text-align:center}

  /* 详情/时间线防溢出：竖排 */
  .modal-body{overflow-x:hidden}
  .item-card{overflow:hidden}
  .tl-body{min-width:0}
  .tl-meta{flex-direction:column;gap:5px}
  .tl-meta span{overflow-wrap:anywhere}
}
@media (max-width:480px){
  .masthead__title small{display:none}
  .stat{padding:14px 16px}
  .stat .num{font-size:25px}
  .stat .ico{display:none}
  .grid4{grid-template-columns:1fr}
  .tl-meta{gap:6px 14px}
}