/* Layout: a work-order look. Steel-ink type on a cool off-white; the one accent is pilot-flame blue.
   Pricing and the free offer are set as service tickets, the paper an HVAC owner handles every day. */
:root{
  --bg:#F3F4F2;
  --paper:#FFFFFF;
  --ticket:#FFF6CF;      /* canary work-order copy */
  --ticket-line:#E6D58A;
  --ink:#16191D;
  --ink-2:#4A525C;
  --line:#D5D9DD;
  --flame:#1C5BD6;       /* pilot-flame blue: the accent */
  --flame-soft:#E3ECFC;
  --flame-tip:#F2A900;   /* the yellow tip of the flame, used tiny */
  --on-flame:#FFFFFF;
  --band:#16191D;
  --on-band:#F1F3F5;
  --on-band-2:#AEB6BF;
  --display:"Archivo","Arial Narrow",Arial,sans-serif;
  --body:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#101317; --paper:#171B21; --ticket:#2A2614; --ticket-line:#4A4220; --ink:#ECEFF2; --ink-2:#A8B1BB; --line:#2A3038;
    --flame:#6F9DFF; --flame-soft:#16233F; --flame-tip:#F2B730; --on-flame:#0B0E12; --band:#0A0C0F; --on-band:#ECEFF2; --on-band-2:#A8B1BB; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#101317; --paper:#171B21; --ticket:#2A2614; --ticket-line:#4A4220; --ink:#ECEFF2; --ink-2:#A8B1BB; --line:#2A3038;
  --flame:#6F9DFF; --flame-soft:#16233F; --flame-tip:#F2B730; --on-flame:#0B0E12; --band:#0A0C0F; --on-band:#ECEFF2; --on-band-2:#A8B1BB; color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--flame);outline-offset:3px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);margin:0;line-height:1.02;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(32px,4.6vw,50px);font-weight:900}
h3{font-size:22px;font-weight:800}
p{margin:0}
.kicker{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--flame)}
.lede{font-size:clamp(19px,2vw,21px);color:var(--ink-2);max-width:58ch}
section{padding-block:clamp(60px,8vw,104px)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:54px;padding:0 26px;border-radius:10px;font-family:var(--display);font-weight:800;font-size:17px;letter-spacing:.01em;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s ease}
.btn-flame{background:var(--flame);color:var(--on-flame)}
.btn-flame:hover{transform:translateY(-1px)}
.btn-line{border-color:var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--paper)}

/* top */
.top{border-bottom:1px solid var(--line);background:var(--bg)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--display);font-weight:900;font-size:22px;letter-spacing:-.01em}
.brand svg{flex:none}
.top nav{display:flex;align-items:center;gap:22px;font-weight:600;font-size:16px}
.top nav a{text-decoration:none;color:var(--ink-2)}
.top nav a:hover{color:var(--ink)}
.top nav a.btn-flame,.top nav a.btn-flame:hover{color:var(--on-flame)}
.top .phone-link{font-family:var(--mono);font-size:15px;color:var(--ink)}
@media (max-width:760px){.top nav .hide-sm{display:none}}

/* hero */
.hero{padding-block:clamp(44px,7vw,88px)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(32px,5vw,64px);align-items:center}
@media (max-width:900px){.hero .wrap{grid-template-columns:minmax(0,1fr)}}
.hero h1{font-size:clamp(44px,7.2vw,86px);font-weight:900}
.hero h1 span{color:var(--flame)}
.hero-copy{display:flex;flex-direction:column;gap:24px;min-width:0}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.price-note{font-size:16px;color:var(--ink-2)}
.price-note b{color:var(--ink)}

/* hero ticket */
.ticket{background:var(--ticket);border:1px solid var(--ticket-line);border-radius:6px;padding:22px 22px 18px;font-family:var(--mono);font-size:14px;color:var(--ink);box-shadow:0 18px 40px -28px rgba(22,25,29,.5);position:relative;transform:rotate(-1.2deg)}
.ticket::before{content:"";position:absolute;left:0;right:0;top:-1px;height:10px;background:radial-gradient(circle at 6px 0,var(--bg) 5px,transparent 5.5px) repeat-x;background-size:12px 10px}
.ticket .t-head{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--ticket-line);padding-bottom:10px;margin-bottom:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:12px}
.ticket dl{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 14px}
.ticket dt{color:var(--ink-2);text-transform:uppercase;font-size:11.5px;letter-spacing:.08em;padding-top:2px}
.ticket dd{margin:0;font-weight:500}
.ticket .t-foot{margin-top:14px;padding-top:10px;border-top:1px dashed var(--ticket-line);display:flex;justify-content:space-between;align-items:end;gap:12px}
.ticket .t-total{font-family:var(--display);font-size:32px;font-weight:900}
.stamp{border:2px solid var(--flame);color:var(--flame);border-radius:6px;padding:4px 10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:12px;transform:rotate(-4deg)}

/* band: the math */
.band{background:var(--band);color:var(--on-band)}
.band .lede{color:var(--on-band-2)}
.math{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
@media (max-width:860px){.math{grid-template-columns:minmax(0,1fr)}}
.math div{border-top:3px solid rgba(255,255,255,.18);padding-top:18px;display:flex;flex-direction:column;gap:8px}
.math div.win{border-top-color:var(--flame)}
.math b{font-family:var(--display);font-size:clamp(40px,5vw,56px);font-weight:900;line-height:1}
.math span{color:var(--on-band-2);font-size:16px}
.band .src{margin-top:28px;font-size:13px;color:var(--on-band-2)}
.band .src a{color:var(--on-band-2)}

/* sample */
.sample .wrap{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(32px,5vw,64px);align-items:start}
@media (max-width:900px){.sample .wrap{grid-template-columns:minmax(0,1fr)}}
.sample-copy{display:flex;flex-direction:column;gap:18px}
.checks{list-style:none;padding:0;margin:6px 0 0;display:flex;flex-direction:column;gap:14px}
.checks li{display:grid;grid-template-columns:24px minmax(0,1fr);gap:12px}
.checks svg{margin-top:4px;color:var(--flame)}
.email{background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 22px 48px -34px rgba(22,25,29,.45)}
.email-meta{padding:14px 20px;border-bottom:1px solid var(--line);font-size:14px;display:grid;gap:4px}
.email-meta div{display:flex;gap:10px}
.email-meta span{width:64px;flex:none;color:var(--ink-2);font-family:var(--mono);font-size:12px;padding-top:2px}
.email-body{padding:clamp(20px,4vw,34px);display:flex;flex-direction:column;gap:16px;font-size:17px}
.e-logo{display:flex;align-items:center;justify-content:space-between;gap:12px;font-family:var(--display);font-weight:900;font-size:20px}
.e-logo a{font-family:var(--mono);font-size:15px;font-weight:600;color:var(--flame);text-decoration:none}
.email-body h4{margin:0;font-family:var(--display);font-weight:900;font-size:30px;line-height:1.05}
.e-cta{align-self:flex-start;background:var(--flame);color:var(--on-flame);font-family:var(--display);font-weight:800;padding:13px 22px;border-radius:8px;text-decoration:none}
.e-tip{background:var(--bg);border-radius:8px;padding:16px 18px}
.e-tip b{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:600;margin-bottom:4px}
.e-offer{border:2px dashed var(--flame);border-radius:8px;padding:14px 18px}
.e-offer b{font-family:var(--display);font-size:22px;font-weight:900}
.email-foot{border-top:1px solid var(--line);padding:14px clamp(20px,4vw,34px);font-size:12.5px;color:var(--ink-2)}
.tag{display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:999px;background:var(--flame-soft);color:var(--flame);font-weight:600}

/* year */
.year-head{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap}
.months{list-style:none;padding:0;margin:36px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden}
@media (max-width:900px){.months{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:440px){.months{grid-template-columns:minmax(0,1fr)}}
.months li{background:var(--paper);padding:18px;display:flex;flex-direction:column;gap:8px;min-width:0}
.months li.slow{background:var(--flame-soft)}
.months .m{display:flex;justify-content:space-between;align-items:center;gap:8px}
.months .m b{font-family:var(--display);font-size:22px;font-weight:900}
.months p{font-size:16px}
.slow-tag{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--flame)}

/* steps */
.steps{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;counter-reset:s}
@media (max-width:820px){.steps{grid-template-columns:minmax(0,1fr)}}
.steps li{display:flex;flex-direction:column;gap:8px;border-top:3px solid var(--ink);padding-top:16px}
.steps li::before{counter-increment:s;content:"Step " counter(s);font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--flame)}
.steps p{color:var(--ink-2)}

/* plans as tickets */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px;align-items:stretch}
@media (max-width:900px){.plans{grid-template-columns:minmax(0,1fr);max-width:520px}}
.plan{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:26px;display:flex;flex-direction:column;gap:16px;position:relative}
.plan.pick{background:var(--ticket);border-color:var(--ticket-line)}
.plan .flag{position:absolute;top:-12px;left:22px}
.plan .no{font-family:var(--mono);font-size:12px;color:var(--ink-2);letter-spacing:.08em;text-transform:uppercase}
.price{display:flex;align-items:baseline;gap:6px}
.price b{font-family:var(--display);font-size:54px;font-weight:900;line-height:.95}
.price span{color:var(--ink-2);font-size:16px}
.per{font-size:15px;color:var(--ink-2);margin-top:-8px}
.plan ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:16px}
.plan li{display:grid;grid-template-columns:20px minmax(0,1fr);gap:10px}
.plan li svg{margin-top:3px;color:var(--flame)}
.plan .btn{margin-top:auto;width:100%}
.plan .fine{font-size:14px;color:var(--ink-2);text-align:center}
.guarantee{margin-top:24px;display:flex;flex-wrap:wrap;gap:10px 28px;font-size:16px;color:var(--ink-2)}
.guarantee span{display:flex;align-items:center;gap:8px}
.guarantee svg{color:var(--flame)}
.linkmsg{margin-top:16px;padding:14px 18px;border-radius:8px;background:var(--flame-soft);font-size:16px}

/* faq */
.faq .wrap{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:clamp(32px,5vw,64px)}
@media (max-width:900px){.faq .wrap{grid-template-columns:minmax(0,1fr)}}
details{border-bottom:1px solid var(--line);padding-block:18px}
details:first-of-type{border-top:1px solid var(--line)}
summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;font-family:var(--display);font-weight:800;font-size:20px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:var(--mono);color:var(--flame);font-size:22px;line-height:1}
details[open] summary::after{content:"\2013"}
details p{margin-top:10px;color:var(--ink-2);max-width:60ch}

/* who */
.who{display:grid;grid-template-columns:auto minmax(0,1fr);gap:28px;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:clamp(22px,4vw,38px)}
@media (max-width:620px){.who{grid-template-columns:minmax(0,1fr)}}
.who .badge{width:92px;height:92px;border-radius:50%;background:var(--band);display:grid;place-items:center}
.who p{color:var(--ink-2)}

/* close */
.close{background:var(--band);color:var(--on-band)}
.close .wrap{display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.close h2{max-width:18ch}
.close p{color:var(--on-band-2);max-width:54ch;font-size:19px}
.contact{display:flex;flex-wrap:wrap;gap:10px 28px;font-family:var(--mono);font-size:15px;color:var(--on-band)}
footer{padding-block:28px;font-size:14px;color:var(--ink-2)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px}
@media (prefers-reduced-motion: reduce){*{transition:none!important}}
body{margin:0}

/* site nav */
.top nav a[aria-current="page"]{color:var(--ink);text-decoration:underline;text-decoration-color:var(--flame);text-decoration-thickness:3px;text-underline-offset:8px}
.menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;min-height:42px;padding:0 12px;font:600 15px var(--body);color:var(--ink);cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:inline-flex;align-items:center}
  .top .wrap{flex-wrap:wrap}
  .top nav.site{display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;padding-top:8px}
  .top nav.site.open{display:flex}
  .top nav.site a{padding:12px 4px;border-top:1px solid var(--line)}
  .top nav.site a.btn{margin-top:10px;border-top:0}
}

/* inner page header */
.page-head{padding-block:clamp(44px,6vw,80px) clamp(28px,4vw,48px);border-bottom:1px solid var(--line)}
.page-head .wrap{display:flex;flex-direction:column;gap:18px}
.page-head h1{font-size:clamp(40px,6vw,72px);font-weight:900;max-width:18ch}
.page-head h1 span{color:var(--flame)}

/* two-up and cards */
.split{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,64px);align-items:start}
@media (max-width:900px){.split{grid-template-columns:minmax(0,1fr)}}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:36px}
@media (max-width:860px){.cards{grid-template-columns:minmax(0,1fr)}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:24px;display:flex;flex-direction:column;gap:10px}
.card p{color:var(--ink-2);font-size:17px}
.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:0}
.list li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.list li:first-child{border-top:1px solid var(--line)}
.list li b{font-family:var(--mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--flame);padding-top:3px}
@media (max-width:560px){.list li{grid-template-columns:minmax(0,1fr);gap:4px}}

/* comparison table */
.table-wrap{margin-top:36px;overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--paper)}
table.compare{width:100%;border-collapse:collapse;font-size:16px;min-width:680px}
.compare th,.compare td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{font-family:var(--display);font-weight:800;font-size:17px;background:var(--bg)}
.compare tbody th{font-weight:600;color:var(--ink-2);width:22%}
.compare .us{background:var(--flame-soft)}
.compare thead th.us{color:var(--flame)}
.compare tr:last-child th,.compare tr:last-child td{border-bottom:0}

/* article (SEO page) */
.prose{max-width:70ch;display:flex;flex-direction:column;gap:18px}
.prose h2{font-size:clamp(28px,3.6vw,38px);margin-top:30px}
.prose h3{margin-top:10px}
.prose p,.prose li{color:var(--ink-2)}
.prose p b,.prose li b{color:var(--ink)}
.prose ul,.prose ol{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:8px}
.prose a{color:var(--flame)}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:20px 22px;position:sticky;top:20px}
.toc ol{margin:10px 0 0;padding-left:20px;display:flex;flex-direction:column;gap:6px;font-size:16px}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--flame)}
@media (max-width:900px){.toc{position:static}}

/* footer links */
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.foot-links a{text-decoration:none}
.foot-links a:hover{color:var(--ink)}
.samples-grid{display:grid;gap:clamp(40px,6vw,72px)}
.sample-row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,56px);align-items:start}
@media (max-width:900px){.sample-row{grid-template-columns:minmax(0,1fr)}}

/* founding offer */
.founding{margin-top:36px;display:flex;flex-wrap:wrap;gap:18px 32px;align-items:center;justify-content:space-between;background:var(--ticket);border:2px solid var(--flame);border-radius:12px;padding:clamp(20px,3vw,28px)}
.founding>div{display:flex;flex-direction:column;gap:8px;max-width:62ch;min-width:0}
.founding h3{font-size:clamp(24px,3vw,30px);font-weight:900}
.founding p{color:var(--ink-2);font-size:17px}
.founding .tag{align-self:flex-start}