/* 汾渭煤焦周度数据 · 季节性图谱 */
:root{
  --bg:#f4f6fa;
  --panel:#ffffff;
  --line:#dfe4ee;
  --line-soft:#eef1f7;
  --ink:#1c2536;
  --ink-2:#5a657c;
  --ink-3:#8a94a8;
  --accent:#1f4e8c;
  --accent-soft:#e8f0fb;
  --excel-blue:#002060;
  --shadow:0 1px 2px rgba(28,37,54,.05),0 4px 14px rgba(28,37,54,.05);
  --radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  font-size:13px;line-height:1.5;
  scroll-padding-top:118px;
}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;background:var(--panel);
  border-bottom:1px solid var(--line);box-shadow:0 1px 3px rgba(28,37,54,.04);
}
.topbar-inner{
  max-width:1920px;margin:0 auto;padding:10px 18px 8px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:nowrap;
}
.brand h1{
  margin:0;font-size:17px;font-weight:700;letter-spacing:.3px;color:var(--excel-blue);
}
.brand .sub{margin:2px 0 0;font-size:12px;color:var(--ink-3)}
.brand .sub b{color:var(--ink-2);font-weight:600}

.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:nowrap}
.year-box{display:flex;align-items:center;gap:3px;margin-right:4px}
.ctl{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--ink-2);white-space:nowrap}
.ctl.chk{cursor:pointer;user-select:none}
.ctl.chk input{cursor:pointer;accent-color:var(--accent);width:13px;height:13px;margin:0}
.year-toggles{display:flex;gap:3px}
.yt{
  padding:1px 5px;border:1px solid var(--line);border-radius:20px;background:#fff;
  font-size:10.5px;cursor:pointer;color:var(--ink-2);transition:.12s;font-variant-numeric:tabular-nums;
}
.yt .dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:3px;vertical-align:1px}
.yt.off{opacity:.35;background:#f6f7fa}
.yt:hover{border-color:var(--accent)}

.btn{
  padding:4px 12px;border:1px solid var(--line);background:#fff;border-radius:6px;
  font-size:12px;color:var(--ink-2);cursor:pointer;transition:.12s;font-family:inherit;
  white-space:nowrap;
}
.btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}

@media (max-width:1260px){
  .topbar-inner{flex-wrap:wrap}
  .toolbar{flex-wrap:wrap}
}

/* ---------- 数据集 Tab ---------- */
.tabs{
  max-width:1920px;margin:0 auto;padding:0 18px;display:flex;gap:2px;
  border-top:1px solid var(--line-soft);
}
.tab{
  padding:8px 18px;border:none;background:none;cursor:pointer;font-size:13px;
  color:var(--ink-2);font-family:inherit;border-bottom:2px solid transparent;transition:.12s;
  white-space:nowrap;
}
.tab:hover{color:var(--accent)}
.tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
.tab .n{font-size:11px;color:var(--ink-3);margin-left:5px}
.tab.active .n{color:var(--accent)}

/* ---------- 主体 ---------- */
main{max-width:1920px;margin:0 auto;padding:16px 18px 40px}
.loading{padding:60px;text-align:center;color:var(--ink-3);font-size:13px}

.row-block{margin-bottom:22px}
.row-head{
  display:flex;align-items:center;gap:10px;margin:0 0 10px;
  padding-bottom:6px;border-bottom:1px solid var(--line);
}
.row-head h2{
  margin:0;font-size:14px;font-weight:700;color:var(--excel-blue);
  display:flex;align-items:center;gap:8px;
}
.row-head h2 .unit{font-size:11px;font-weight:400;color:var(--ink-3)}
.row-head .spacer{flex:1}
.row-head .hint{font-size:11px;color:var(--ink-3)}

.grid{
  display:grid;gap:12px;
  grid-template-columns:repeat(5,minmax(0,1fr));
}
@media (max-width:1700px){.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:1360px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:1000px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:680px){.grid{grid-template-columns:1fr}}

.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
}
.card-head{
  padding:7px 10px 5px;border-bottom:1px solid var(--line-soft);
  display:flex;align-items:baseline;gap:6px;
}
.card-head .t{font-size:12.5px;font-weight:600;color:var(--ink);line-height:1.3}
.card-head .u{font-size:10.5px;color:var(--ink-3);white-space:nowrap}
.chart{width:100%;height:236px}
.card-foot{
  padding:5px 10px;border-top:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:space-between;
  font-size:11px;color:var(--ink-3);
}
.card-foot .latest b{font-variant-numeric:tabular-nums;color:var(--ink-2)}
.card-foot .rel{font-variant-numeric:tabular-nums}
.card-foot .rel.up{color:#c0392b}
.card-foot .rel.down{color:#1e8449}

.data-table{
  padding:5px 7px;border-top:1px solid var(--line-soft);background:#fbfcfd;
  font-size:10.5px;
}
.data-table table{width:100%;border-collapse:collapse;table-layout:fixed}
.data-table th,.data-table td{
  padding:3px 1px;text-align:center;border:1px solid var(--line-soft);
}
.data-table th{color:var(--ink-3);font-weight:500;background:#f4f6fa;width:20%}
.data-table td{color:var(--ink-2);font-variant-numeric:tabular-nums;font-weight:600}

.dl{
  border:none;background:none;cursor:pointer;color:var(--ink-3);padding:0 2px;
  font-size:11px;font-family:inherit;
}
.dl:hover{color:var(--accent)}

/* ---------- 页脚 ---------- */
.foot{
  max-width:1920px;margin:0 auto;padding:14px 18px 26px;
  border-top:1px solid var(--line);display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:11px;color:var(--ink-3);
}
.disc{color:var(--ink-3)}

/* ---------- 数据表视图 ---------- */
.table-view{padding:6px 0 30px}
.table-title{
  margin:0 0 12px;font-size:15px;font-weight:700;color:var(--excel-blue);
  text-align:center;
}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
.summary-table{
  border-collapse:collapse;font-size:12px;min-width:100%;
  white-space:nowrap;
}
.summary-table th,.summary-table td{
  padding:7px 10px;text-align:center;border:1px solid var(--line-soft);
  font-variant-numeric:tabular-nums;
}
.summary-table thead th{background:#f4f6fa;font-weight:600;color:var(--ink)}
.summary-table .metric-head{
  background:#e8f0fb;color:var(--excel-blue);font-size:13px;
  border-bottom:2px solid var(--line);
}
.summary-table .row-label{background:#f4f6fa;font-weight:500;color:var(--ink-2)}
.summary-table tbody tr:nth-child(even){background:#fbfcfd}
.summary-table td.up{background:#ffdede;color:#c0392b}
.summary-table td.down{background:#e2f5e2;color:#1e8449}
.summary-table td:empty::before{content:'-'}

@media (max-width:1260px){
  .table-title{font-size:14px}
  .summary-table th,.summary-table td{padding:6px 8px;font-size:11.5px}
}