:root{
  --navy:#1f3a5f; --coal:#b06a2c; --oil:#5a6b7d; --mto:#7d6b8a;
  --up:#c0392b; --down:#1e8449; --ink:#1b1a17; --ink3:#8d867c;
  --line:#e8e3d9; --grid:#f0ece4; --tan:#d8b183;
  --bg:#faf8f3; --card:#ffffff; --muted:#6b665c; --soft:#f4f0e8;
  --shadow:0 1px 3px rgba(31,58,95,.08),0 6px 20px rgba(31,58,95,.06);
}
[data-theme="dark"]{
  --bg:#14171c; --card:#1c2128; --ink:#ece7dd; --ink3:#9a9389; --muted:#a8a199;
  --line:#2a313b; --grid:#222a33; --soft:#20262e; --shadow:0 1px 3px rgba(0,0,0,.4);
  --tan:#caa06a;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Source Han Sans CN","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
.nav{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff}
.nav-inner{max-width:1080px;margin:0 auto;padding:12px 18px;display:flex;align-items:center;gap:12px}
.nav-logo{font-weight:700;font-size:18px;letter-spacing:.5px}
.nav-logo .dot{color:var(--tan)}
.nav-sub{font-size:13px;opacity:.8}
.theme-toggle{margin-left:auto;background:rgba(255,255,255,.12);border:0;color:#fff;
  width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:15px}
.theme-toggle:hover{background:rgba(255,255,255,.22)}

.status{max-width:1080px;margin:14px auto 0;padding:8px 14px;border-radius:9px;font-size:13px;
  display:flex;align-items:center;gap:8px;width:calc(100% - 36px)}
.status i{width:8px;height:8px;border-radius:50%;background:var(--ink3);display:inline-block}
.status.live{background:rgba(30,132,73,.1);color:var(--down)}
.status.live i{background:var(--down);box-shadow:0 0 0 3px rgba(30,132,73,.18)}
.status.snap{background:rgba(176,106,44,.12);color:var(--coal)}
.status.snap i{background:var(--coal)}

.hero{max-width:1080px;margin:16px auto;background:var(--card);border-radius:16px;box-shadow:var(--shadow);
  padding:22px;display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.hero-gauge{position:relative;width:140px;height:140px;flex:none}
.gauge{transform:rotate(-90deg);width:140px;height:140px}
.gauge-bg{fill:none;stroke:var(--grid);stroke-width:10}
.gauge-fg{fill:none;stroke:var(--navy);stroke-width:10;stroke-linecap:round;
  stroke-dasharray:314;stroke-dashoffset:314;transition:stroke-dashoffset .9s ease}
.hero-gauge .gauge-num{position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center}
.gauge-num b{font-size:38px;font-weight:800;color:var(--navy);line-height:1}
.gauge-num span{font-size:12px;color:var(--muted);margin-top:4px}
.hero-main{flex:1;min-width:280px}
.heroTag{display:inline-block;font-size:13px;font-weight:700;padding:3px 12px;border-radius:999px;
  background:var(--soft);color:var(--muted)}
.heroTag.hot{background:rgba(192,57,43,.14);color:var(--up)}
.heroTag.warm{background:rgba(176,106,44,.16);color:var(--coal)}
.heroTag.mid{background:rgba(31,58,95,.1);color:var(--navy)}
.heroTag.cool{background:rgba(90,107,125,.16);color:var(--oil)}
.hero-text{margin:10px 0 14px;font-size:15px;color:var(--ink)}
.hero-text b{color:var(--navy)}
.hero-meta{display:flex;gap:10px;flex-wrap:wrap}
.hm{background:var(--soft);border-radius:10px;padding:8px 12px;min-width:84px}
.hm span{display:block;font-size:11px;color:var(--muted)}
.hm strong{font-size:17px;font-weight:700}
.hero-side{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.hs{background:var(--soft);border-radius:10px;padding:8px 12px;font-size:13px;flex:1;min-width:120px}
.hs span{display:block;font-size:11px;color:var(--muted)}
.hs strong{font-size:18px;font-weight:700}
.hs em{font-style:normal;font-size:11px;color:var(--ink3)}

.sec-title{font-size:17px;margin:26px 0 12px;font-weight:700;color:var(--navy)}
.sec-title small{font-weight:400;color:var(--muted);font-size:12px;margin-left:8px}

.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.pcard{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:14px 16px;
  border-left:4px solid var(--navy)}
.pcard.coal{border-left-color:var(--coal)}
.pcard.oil{border-left-color:var(--oil)}
.pcard.pp{border-left-color:var(--mto)}
.pcard .pname{font-size:13px;color:var(--muted)}
.pcard .pname b{color:var(--ink);font-weight:700}
.pcard .psrc{font-size:11px;color:var(--ink3)}
.pcard .pval{font-size:26px;font-weight:800;margin:6px 0 2px;line-height:1}
.pcard .pchg{font-size:13px;font-weight:600}
.pcard .pdate{font-size:11px;color:var(--ink3);margin-top:4px}
.up{color:var(--up)}.down{color:var(--down)}.flat{color:var(--muted)}

.chart{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:10px;height:340px}
.two-col{display:grid;grid-template-columns:1.4fr 1fr;gap:14px}
.panel{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:16px}
.panel h3{margin:0 0 10px;font-size:15px;color:var(--navy)}
.kv{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv:last-child{border-bottom:0}
.kv b{font-weight:700}

.company-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}
.ccard{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:14px}
.ccard h4{margin:0 0 4px;font-size:15px;color:var(--navy)}
.ccard .cdesc{font-size:11px;color:var(--muted);min-height:30px}
.ccard .cimp{font-size:24px;font-weight:800;color:var(--coal);margin:6px 0}
.ccard .cbar{height:6px;border-radius:3px;background:var(--grid);position:relative;margin:8px 0}
.ccard .cbar i{position:absolute;top:-3px;width:10px;height:12px;border-radius:3px;background:var(--navy)}
.ccard .cmeta{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}

.table-wrap{overflow-x:auto;border-radius:14px;box-shadow:var(--shadow);background:var(--card)}
.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th,.tbl td{padding:10px 12px;text-align:right;border-bottom:1px solid var(--line)}
.tbl th:first-child,.tbl td:first-child{text-align:left}
.tbl thead th{background:var(--soft);color:var(--navy);font-weight:700;font-size:12px}
.tbl tbody tr:hover{background:var(--soft)}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:700}
.badge.A{background:rgba(30,132,73,.15);color:var(--down)}
.badge.B{background:rgba(176,106,44,.16);color:var(--coal)}
.badge.C{background:rgba(138,134,124,.18);color:var(--ink3)}

.alerts{display:flex;gap:10px;flex-wrap:wrap}
.alert{background:rgba(192,57,43,.08);border:1px solid rgba(192,57,43,.25);border-radius:10px;
  padding:10px 14px;font-size:13px}
.alert b{color:var(--up)}

.note{font-size:12px;color:var(--muted);margin:8px 2px 0}
.method{background:var(--card);border-radius:14px;box-shadow:var(--shadow);padding:14px 18px;margin:22px 0}
.method summary{cursor:pointer;font-weight:700;color:var(--navy)}
.method-body{margin-top:12px;font-size:13px;color:var(--ink)}
.method-body h4{color:var(--coal);margin:14px 0 4px}
.method-body code{background:var(--soft);padding:1px 6px;border-radius:5px;font-size:12px}

.footer{max-width:1080px;margin:30px auto 24px;padding:0 18px;color:var(--muted);font-size:12px}
.foot-disclaim{margin-top:6px;opacity:.8}

@media (max-width:760px){
  .price-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
  .company-cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:480px){
  .price-grid{grid-template-columns:1fr}
  .company-cards{grid-template-columns:1fr}
}