/* =====================================================================
   HVAC COMPANY — Command Center Presentation
   Design system: dark "SaaS command center", cool HVAC blues + heat accent
   ===================================================================== */
:root{
  --bg:#070b15;
  --bg-2:#0b1120;
  --panel:#0f1626;
  --panel-2:#131c30;
  --panel-3:#172139;
  --border:#1e2a44;
  --border-2:#2a3a5c;
  --text:#e7edf7;
  --text-dim:#9aa8c2;
  --text-mute:#647088;
  --cyan:#22d3ee;
  --blue:#3b82f6;
  --indigo:#6366f1;
  --heat:#fb923c;
  --heat-2:#f97316;
  --green:#34d399;
  --amber:#fbbf24;
  --red:#fb5876;
  --grad: linear-gradient(135deg,#22d3ee 0%,#3b82f6 60%,#6366f1 100%);
  --grad-heat: linear-gradient(135deg,#fbbf24 0%,#fb923c 50%,#f97316 100%);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --shadow:0 20px 50px -20px rgba(0,0,0,.7);
  --r:16px;
  --sidebar:264px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(800px 500px at 12% -5%, rgba(34,211,238,.10), transparent 60%),
    radial-gradient(900px 600px at 95% 0%, rgba(99,102,241,.12), transparent 55%),
    radial-gradient(700px 500px at 50% 110%, rgba(251,146,60,.06), transparent 60%);
}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.02em;font-weight:700}

/* ---------- LAYOUT ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:var(--sidebar);flex:0 0 var(--sidebar);position:fixed;inset:0 auto 0 0;height:100vh;
  background:linear-gradient(180deg,var(--bg-2),#070b15);
  border-right:1px solid var(--border);
  padding:26px 18px;display:flex;flex-direction:column;gap:8px;z-index:50;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:11px;padding:0 6px 18px;border-bottom:1px solid var(--border);margin-bottom:14px}
.brand .logo{
  width:40px;height:40px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;font-weight:800;color:#04121e;font-size:15px;flex:0 0 40px;
  box-shadow:0 6px 18px -6px rgba(34,211,238,.6)
}
.brand .bt{font-weight:800;font-size:15px;letter-spacing:-.02em;line-height:1.1}
.brand .bs{font-size:11px;color:var(--text-mute);letter-spacing:.04em;text-transform:uppercase}
.nav{display:flex;flex-direction:column;gap:3px;margin-top:6px}
.nav a{
  display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:11px;
  color:var(--text-dim);font-size:14px;font-weight:500;transition:.16s;border:1px solid transparent;
}
.nav a .ico{width:18px;height:18px;flex:0 0 18px;opacity:.85}
.nav a .n{width:20px;font-family:var(--mono);font-size:11px;color:var(--text-mute)}
.nav a:hover{background:var(--panel);color:var(--text)}
.nav a.active{background:linear-gradient(135deg,rgba(34,211,238,.14),rgba(99,102,241,.12));color:#fff;border-color:var(--border-2)}
.nav a.active .n{color:var(--cyan)}
.side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--border);font-size:11.5px;color:var(--text-mute)}
.side-foot .cta{
  display:block;text-align:center;margin-bottom:12px;padding:11px;border-radius:11px;
  background:var(--grad-heat);color:#241200;font-weight:700;font-size:13px;
  box-shadow:0 8px 22px -10px rgba(249,115,22,.7);transition:.16s
}
.side-foot .cta:hover{transform:translateY(-1px)}

.main{margin-left:var(--sidebar);flex:1;min-width:0;padding:0 0 80px}
.wrap{max-width:1080px;margin:0 auto;padding:0 36px}

/* ---------- TOPBAR (mobile) ---------- */
.topbar{display:none}

/* ---------- HERO / PAGE HEAD ---------- */
.pagehead{padding:54px 0 28px;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px;
  padding:6px 12px;border:1px solid var(--border-2);border-radius:999px;background:var(--panel)}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.pagehead h1{font-size:clamp(30px,4.6vw,52px);letter-spacing:-.03em}
.pagehead .sub{margin-top:16px;font-size:clamp(16px,1.6vw,19px);color:var(--text-dim);max-width:720px}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.heat-text{background:var(--grad-heat);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- SECTION ---------- */
section{padding:26px 0}
.sec-title{font-size:13px;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--text-mute);margin-bottom:18px;display:flex;align-items:center;gap:12px}
.sec-title::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}
.h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.lead{color:var(--text-dim);font-size:17px;max-width:760px;margin-bottom:8px}

/* ---------- CARDS ---------- */
.card{background:linear-gradient(180deg,var(--panel),var(--bg-2));border:1px solid var(--border);border-radius:var(--r);padding:24px}
.card.glow{box-shadow:var(--shadow)}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* metric cards */
.metric{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--border);border-radius:14px;padding:20px;position:relative;overflow:hidden}
.metric::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad)}
.metric.bad::before{background:linear-gradient(90deg,var(--red),#9f1239)}
.metric.warn::before{background:linear-gradient(90deg,var(--amber),var(--heat-2))}
.metric.good::before{background:linear-gradient(90deg,var(--green),#059669)}
.metric .mlabel{font-size:12.5px;color:var(--text-mute);letter-spacing:.02em;margin-bottom:10px;min-height:32px}
.metric .mval{font-family:var(--mono);font-size:38px;font-weight:700;letter-spacing:-.03em;line-height:1}
.metric.bad .mval{color:var(--red)}.metric.warn .mval{color:var(--amber)}.metric.good .mval{color:var(--green)}
.metric .mnote{font-size:12.5px;color:var(--text-dim);margin-top:11px;line-height:1.45}

/* big stat */
.bigstat{text-align:center;padding:30px 20px}
.bigstat .v{font-family:var(--mono);font-size:clamp(40px,7vw,72px);font-weight:800;letter-spacing:-.04em;line-height:.95}
.bigstat .l{color:var(--text-dim);margin-top:12px;font-size:15px}

/* pills / badges */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;border:1px solid var(--border-2);font-family:var(--mono)}
.pill.red{color:var(--red);background:rgba(251,88,118,.10);border-color:rgba(251,88,118,.3)}
.pill.green{color:var(--green);background:rgba(52,211,153,.10);border-color:rgba(52,211,153,.3)}
.pill.amber{color:var(--amber);background:rgba(251,191,36,.10);border-color:rgba(251,191,36,.3)}
.pill.blue{color:var(--cyan);background:rgba(34,211,238,.10);border-color:rgba(34,211,238,.3)}

/* ---------- TABLES ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-mute);font-weight:600;padding:12px 14px;border-bottom:1px solid var(--border-2)}
.tbl td{padding:13px 14px;border-bottom:1px solid var(--border)}
.tbl tr:last-child td{border-bottom:none}
.tbl tbody tr{transition:.12s}
.tbl tbody tr:hover{background:var(--panel-2)}
.tbl .num{font-family:var(--mono);text-align:right}
.tbl .kw{font-weight:600}
.tbl-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:14px;background:linear-gradient(180deg,var(--panel),var(--bg-2))}

/* rank chip */
.rank{font-family:var(--mono);font-weight:700;padding:3px 9px;border-radius:7px;font-size:13px;display:inline-block;min-width:42px;text-align:center}
.rank.r1{background:rgba(52,211,153,.16);color:var(--green)}
.rank.r2{background:rgba(251,191,36,.16);color:var(--amber)}
.rank.r3{background:rgba(251,88,118,.16);color:var(--red)}
.rank.rx{background:rgba(100,112,136,.14);color:var(--text-mute)}

/* bars */
.bar{height:9px;border-radius:6px;background:var(--panel-3);overflow:hidden;position:relative}
.bar > span{display:block;height:100%;border-radius:6px;background:var(--grad)}
.bar.heat > span{background:var(--grad-heat)}

/* gauge ring */
.gauge{display:flex;align-items:center;gap:16px}
.ring{--p:0;--c:var(--cyan);width:84px;height:84px;border-radius:50%;flex:0 0 84px;
  background:conic-gradient(var(--c) calc(var(--p)*1%), var(--panel-3) 0);
  display:grid;place-items:center;position:relative}
.ring::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--panel)}
.ring b{position:relative;z-index:1;font-family:var(--mono);font-size:20px}

/* callout / quote */
.callout{border-left:3px solid var(--cyan);background:var(--panel-2);padding:18px 22px;border-radius:0 12px 12px 0;color:var(--text);font-size:16px}
.callout.heat{border-color:var(--heat)}
.callout.red{border-color:var(--red)}
.big-quote{font-size:clamp(20px,2.6vw,30px);font-weight:700;letter-spacing:-.02em;line-height:1.32}

/* check / x lists */
.clist{list-style:none;display:flex;flex-direction:column;gap:11px}
.clist li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-dim)}
.clist li .mk{flex:0 0 22px;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font-size:13px;font-weight:800;margin-top:1px}
.clist li .mk.x{background:rgba(251,88,118,.14);color:var(--red)}
.clist li .mk.c{background:rgba(52,211,153,.14);color:var(--green)}
.clist li .mk.w{background:rgba(251,191,36,.14);color:var(--amber)}
.clist li b{color:var(--text);font-weight:600}

/* offer stack */
.stack-row{display:flex;justify-content:space-between;gap:18px;padding:16px 0;border-bottom:1px dashed var(--border-2)}
.stack-row:last-child{border-bottom:none}
.stack-row .si b{font-size:15px}
.stack-row .si p{font-size:13px;color:var(--text-mute);margin-top:3px;max-width:560px}
.stack-row .sv{font-family:var(--mono);font-weight:700;color:var(--cyan);white-space:nowrap;font-size:15px}
.stack-total{display:flex;justify-content:space-between;align-items:center;margin-top:8px;padding-top:18px;border-top:2px solid var(--border-2)}
.stack-total .lbl{font-size:14px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.08em}
.stack-total .amt{font-family:var(--mono);font-size:30px;font-weight:800}
.strike{text-decoration:line-through;color:var(--text-mute);font-family:var(--mono)}

/* pricing tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tier{background:linear-gradient(180deg,var(--panel-2),var(--panel));border:1px solid var(--border);border-radius:16px;padding:26px 22px;position:relative;display:flex;flex-direction:column}
.tier.rec{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan),0 24px 50px -24px rgba(34,211,238,.4)}
.tier .badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#04121e;font-size:11px;font-weight:800;padding:5px 14px;border-radius:999px;letter-spacing:.05em}
.tier h3{font-size:20px}
.tier .pr{font-family:var(--mono);font-size:34px;font-weight:800;margin:10px 0 2px}
.tier .pr small{font-size:14px;color:var(--text-mute);font-weight:500}
.tier .bl{color:var(--text-dim);font-size:13.5px;min-height:40px;margin-bottom:14px}
.tier ul{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:13.5px;color:var(--text-dim);flex:1}
.tier ul li{display:flex;gap:9px}
.tier ul li::before{content:"✓";color:var(--green);font-weight:800}

/* CTA banner */
.cta-banner{background:var(--grad);border-radius:20px;padding:42px;color:#04121e;text-align:center;position:relative;overflow:hidden}
.cta-banner h2{font-size:clamp(24px,3vw,34px);color:#031018}
.cta-banner p{color:#0a2330;font-size:17px;margin:12px auto 24px;max-width:560px;font-weight:500}
.btn{display:inline-flex;align-items:center;gap:9px;padding:15px 30px;border-radius:12px;font-weight:700;font-size:16px;transition:.16s;cursor:pointer;border:none}
.btn-dark{background:#06121c;color:#fff}
.btn-dark:hover{transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(0,0,0,.6)}
.btn-heat{background:var(--grad-heat);color:#241200;box-shadow:0 10px 26px -10px rgba(249,115,22,.7)}
.btn-heat:hover{transform:translateY(-2px)}

/* verdict box */
.verdict{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center;background:linear-gradient(135deg,rgba(251,88,118,.08),var(--panel));border:1px solid rgba(251,88,118,.25);border-radius:18px;padding:26px}
.verdict .score{font-family:var(--mono);font-size:54px;font-weight:800;color:var(--red);line-height:1;text-align:center}
.verdict .score small{display:block;font-size:13px;color:var(--text-mute);font-weight:500;letter-spacing:.06em;margin-top:6px}

/* footer */
.foot{border-top:1px solid var(--border);margin-top:50px;padding:26px 0;color:var(--text-mute);font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* pager */
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:40px}
.pager a{flex:1;border:1px solid var(--border);border-radius:14px;padding:18px 20px;background:var(--panel);transition:.16s;display:flex;flex-direction:column;gap:3px}
.pager a:hover{border-color:var(--border-2);background:var(--panel-2);transform:translateY(-2px)}
.pager .pl{font-size:11.5px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.08em}
.pager .pt{font-weight:700;font-size:15px}
.pager .next{text-align:right}

.muted{color:var(--text-mute);font-size:12.5px}
.fade-up{opacity:0;transform:translateY(16px);animation:fu .6s forwards}
@keyframes fu{to{opacity:1;transform:none}}

/* chart sizing */
.chart-box{position:relative;height:300px}
.chart-box.sm{height:230px}

/* ---------- RESPONSIVE ---------- */
@media(max-width:980px){
  .sidebar{transform:translateX(-100%);transition:.25s;box-shadow:var(--shadow)}
  .sidebar.open{transform:none}
  .main{margin-left:0}
  .topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;position:sticky;top:0;z-index:40;
    background:rgba(7,11,21,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
  .topbar .brand{border:none;padding:0;margin:0}
  .burger{width:42px;height:42px;border:1px solid var(--border-2);border-radius:11px;background:var(--panel);display:grid;place-items:center;cursor:pointer}
  .burger span{display:block;width:18px;height:2px;background:var(--text);position:relative}
  .burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
  .burger span::before{top:-6px}.burger span::after{top:6px}
  .wrap{padding:0 20px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:1fr}
  .tiers{grid-template-columns:1fr}
  .verdict{grid-template-columns:1fr;text-align:center}
}
@media(max-width:560px){
  .g2,.g4{grid-template-columns:1fr}
  .pagehead{padding:34px 0 20px}
  .stack-row{flex-direction:column;gap:6px}
}
.scrim{display:none}
@media(max-width:980px){.scrim.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:45}}