/* AERIOQ Heating & Cooling — independent review site. Shared stylesheet. */
:root{
  /* brand */
  --color-primary:#c2570f;
  --color-primary-dark:#9a4308;
  --color-primary-light:#f3d9b8;
  --color-secondary:#1d5fa8;
  --color-secondary-dark:#154674;
  --color-secondary-light:#e4eff9;
  /* neutrals */
  --ink:#181a1d;
  --ink-soft:#4b4f56;
  --bg:#fafaf8;
  --surface:#ffffff;
  --border:#e4e2dd;
  /* semantic */
  --green:#166534;
  --green-bg:#eef8f0;
  --green-border:#bfe2c9;
  --red:#a01818;
  --red-bg:#fdf0ee;
  --red-border:#f0c6c0;
  --amber:#8a5a10;
  --amber-bg:#fdf5e4;
  --amber-border:#eeddb0;
  --grey:#33404f;
  --grey-bg:#f0f3f6;
  --grey-border:#d9e0e7;
  --radius:10px;
  --shadow:0 2px 10px rgba(20,20,15,0.07);
  --maxw:900px;
}
*{box-sizing:border-box;}
.promo-bar{background:var(--color-primary);color:#fff;text-align:center;padding:10px 16px;font-weight:700;font-size:.95rem;}
@media (max-width:480px){.promo-bar{font-size:.8rem;padding:9px 10px;}}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  font-size:18px;
  line-height:1.65;
  text-wrap:pretty;
}
h1,h2,h3,h4{
  font-family:Georgia,"Times New Roman",serif;
  color:var(--ink);
  line-height:1.25;
  margin:0 0 .5em;
  text-wrap:pretty;
  text-align:center;
}
.hero-sub,.eeat,.small-print,.answer-box,section.block>p,.note,.note-title{text-align:center;}
.note ul,.note ol,.note li,.answer-box ul,.answer-box li{text-align:left;}
.breadcrumb{text-align:left;}
h1{font-size:clamp(1.9rem,5vw,2.7rem);}
h2{font-size:clamp(1.5rem,3.6vw,2.05rem);margin-top:2.4em;}
h3{font-size:1.3rem;margin-top:1.6em;}
h4{font-size:1.1rem;}
p{margin:0 0 1.1em;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--color-secondary);text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color .15s;}
a:hover{color:var(--color-secondary-dark);text-decoration-color:currentColor;}
ul,ol{padding-left:1.4em;}
li{margin-bottom:.5em;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.full{width:100%;}

/* SKIP LINK */
.skip-link{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200;}
.skip-link:focus{left:8px;top:8px;}

/* HEADER / NAV */
header.site-header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border);}
.nav-row{max-width:1160px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:10px 20px;gap:16px;}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;}
.brand img{height:30px;width:auto;}
.brand span{font-weight:700;color:var(--ink);font-family:Georgia,serif;font-size:1.05rem;}
nav.primary-nav{display:flex;align-items:center;gap:22px;}
nav.primary-nav a{color:var(--ink);text-decoration:none;font-size:.98rem;font-weight:500;}
nav.primary-nav a:hover{color:var(--color-primary);}
.nav-cta{background:var(--color-primary);color:#fff !important;padding:10px 18px;border-radius:999px;font-weight:700;white-space:nowrap;}
.nav-cta:hover{background:var(--color-primary-dark);color:#fff !important;}
.hamburger{display:none;background:none;border:0;cursor:pointer;padding:8px;min-width:44px;min-height:44px;}
.hamburger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;}

/* countdown bar */
.countdown-bar{background:var(--color-secondary-dark);color:#fff;text-align:center;font-size:.92rem;padding:9px 14px;}
.countdown-bar strong{font-variant-numeric:tabular-nums;background:rgba(255,255,255,.15);padding:2px 8px;border-radius:6px;}

/* BREADCRUMB */
.breadcrumb{font-size:.88rem;color:var(--ink-soft);padding:14px 0 0;}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--color-secondary);}

/* HERO */
.hero{background:linear-gradient(135deg,var(--color-secondary-light),#fbeee0);padding:40px 0 44px;}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.eeat{font-size:.94rem;color:var(--ink-soft);margin-bottom:18px;}
.eeat a{font-weight:600;}
.hero h1{margin-bottom:14px;}
.hero-sub{font-size:1.2rem;color:var(--ink-soft);font-weight:500;margin-bottom:16px;}
.small-print{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;font-size:.92rem;color:var(--ink-soft);margin-top:18px;}

/* MAIN CONTENT */
main{padding:8px 0 10px;}
section.block{padding:26px 0;}

/* TOC (collapsible) */
details.toc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 20px;margin:26px 0;box-shadow:var(--shadow);}
details.toc summary{cursor:pointer;font-weight:700;font-size:1.05rem;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 0;}
details.toc summary::-webkit-details-marker{display:none;}
details.toc summary .toc-icon{border:1px solid var(--border);border-radius:6px;padding:3px 8px;font-size:.95rem;color:var(--color-secondary);}
details.toc ul{list-style:none;padding:0;margin:14px 0 0;text-align:left;}
details.toc:not([open]) ul{display:none;}
details.toc[open] ul{display:grid;gap:8px;}
details.toc a{text-decoration:none;font-weight:500;}

/* ANSWER BOX (AEO) */
.answer-box{background:var(--grey-bg);border-left:4px solid var(--color-secondary);border-radius:8px;padding:16px 18px;margin:14px 0 20px;font-size:1rem;}
.answer-box strong{color:var(--color-secondary-dark);}

/* NOTE / CALLOUT BOXES */
.note{border-radius:var(--radius);padding:16px 18px;margin:18px 0;border:1px solid;}
.note-title{font-weight:700;display:flex;align-items:center;gap:8px;margin-bottom:6px;}
.note-green{background:var(--green-bg);border-color:var(--green-border);color:#0e3d20;}
.note-green .note-title{color:var(--green);}
.note-red{background:var(--red-bg);border-color:var(--red-border);color:#5c1010;}
.note-red .note-title{color:var(--red);}
.note-amber{background:var(--amber-bg);border-color:var(--amber-border);color:#5c3f08;}
.note-amber .note-title{color:var(--amber);}
.note-grey{background:var(--grey-bg);border-color:var(--grey-border);color:#1c2733;}
.note-grey .note-title{color:var(--grey);}

/* STAT ROW */
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:20px 0;}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px;text-align:center;box-shadow:var(--shadow);}
.stat b{display:block;font-size:1.05rem;color:var(--color-primary);}

/* FEATURE ROWS */
.feature-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--border);}
.feature-row:last-child{border-bottom:none;}
.feature-num{flex:0 0 auto;width:34px;height:34px;border-radius:50%;background:var(--color-secondary-light);color:var(--color-secondary-dark);display:flex;align-items:center;justify-content:center;font-weight:700;}

/* DUO PANEL */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0;}
@media (max-width:640px){.duo{grid-template-columns:1fr;}}
.duo>div{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;}

/* IMAGE FIGURE */
figure.img-figure{margin:22px 0;}
figure.img-figure img{border-radius:var(--radius);box-shadow:var(--shadow);}
figure.img-figure figcaption{font-size:.85rem;color:var(--ink-soft);margin-top:8px;text-align:center;}

/* PRICING */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:20px 0;}
.price-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;text-align:center;box-shadow:var(--shadow);position:relative;}
.price-card.best{border-color:var(--color-primary);border-width:2px;}
.price-card .badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--color-primary);color:#fff;font-size:.72rem;font-weight:700;padding:4px 12px;border-radius:999px;white-space:nowrap;}
.price-card img{border-radius:8px;margin:10px auto;}
.price-card .amount{font-size:1.7rem;font-weight:800;color:var(--ink);margin:8px 0 2px;font-family:Georgia,serif;}
.price-card .per{font-size:.85rem;color:var(--ink-soft);margin-bottom:10px;}
.btn{display:inline-block;background:var(--color-primary);color:#fff !important;text-decoration:none;font-weight:700;padding:14px 22px;border-radius:8px;min-height:44px;text-align:center;box-shadow:var(--shadow);}
.btn:hover{background:var(--color-primary-dark);}
.btn.full{display:block;width:100%;}
.btn.secondary{background:var(--color-secondary);}
.btn.secondary:hover{background:var(--color-secondary-dark);}
.cta-center{text-align:center;margin:26px 0;}

/* GUARANTEE BADGE */
.guarantee-strip{display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;margin:20px 0;box-shadow:var(--shadow);}
.guarantee-strip img{width:56px;height:56px;flex:0 0 auto;}

/* TESTIMONIALS */
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0;}
.testi-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);}
.stars{color:var(--color-primary);font-size:1.05rem;letter-spacing:1px;}
.testi-card q{display:block;margin:8px 0;font-style:italic;}
.testi-name{font-size:.86rem;color:var(--ink-soft);}

/* PROS CONS */
.pc-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0;}
@media (max-width:640px){.pc-grid{grid-template-columns:1fr;}}
.pc-col{border-radius:var(--radius);padding:16px 18px;}
.pc-col.pros{background:var(--green-bg);border:1px solid var(--green-border);}
.pc-col.cons{background:var(--amber-bg);border:1px solid var(--amber-border);}
.pc-col h3{margin-top:0;}
.pc-col ul{list-style:none;padding:0;margin:0;}
.pc-col li{padding-left:26px;position:relative;margin-bottom:9px;}
.pc-col.pros li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:700;}
.pc-col.cons li::before{content:"✗";position:absolute;left:0;color:var(--amber);font-weight:700;}

/* FAQ */
.faq details{border-bottom:1px solid var(--border);padding:12px 0;}
.faq summary{cursor:pointer;font-weight:700;font-size:1.05rem;padding:6px 32px 6px 0;position:relative;list-style:none;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";position:absolute;right:4px;top:4px;font-size:1.4rem;color:var(--color-secondary);}
.faq details[open] summary::after{content:"–";}
.faq .faq-a{padding:8px 0 4px;color:var(--ink-soft);}

/* CTA BAND */
.cta-band{background:var(--color-primary);color:#fff;padding:36px 0;text-align:center;margin:34px 0 0;}
.cta-band h2{color:#fff;margin-top:0;}
.cta-band .btn{background:#fff;color:var(--color-primary-dark) !important;}
.cta-band .btn:hover{background:#f4e4d3;}
.cta-band p{color:#fdeee0;}

/* SCENARIO / COMPARE CARDS */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0;}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);}
.card h3{margin-top:0;font-size:1.08rem;}

/* TABLE (specs) */
.table-scroll{overflow-x:auto;margin:18px 0;}
table.specs{width:100%;border-collapse:collapse;min-width:480px;}
table.specs th,table.specs td{border:1px solid var(--border);padding:10px 12px;text-align:left;font-size:.95rem;}
table.specs th{background:var(--grey-bg);}

/* FOOTER */
footer.site-footer{background:#1c2430;color:#c9cfd8;padding:40px 0 24px;margin-top:40px;}
.footer-inner{max-width:1160px;margin:0 auto;padding:0 20px;}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:18px;}
.footer-links a{color:#e6e9ee;text-decoration:none;font-size:.94rem;}
.footer-links a:hover{color:#fff;text-decoration:underline;}
.footer-nap{font-size:.9rem;margin-bottom:14px;line-height:1.7;}
.footer-nap a{color:#c9cfd8;}
.footer-disclosure{font-size:.82rem;color:#8d97a4;border-top:1px solid #313b48;padding-top:16px;margin-top:10px;line-height:1.6;}
.footer-copy{font-size:.82rem;color:#8d97a4;margin-top:14px;}

/* TOAST */
.order-toast{position:fixed;left:16px;bottom:16px;background:var(--surface);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.16);padding:12px 40px 12px 14px;max-width:290px;font-size:.86rem;z-index:150;display:none;}
.order-toast.show{display:block;}
.order-toast .close{position:absolute;top:6px;right:8px;background:none;border:0;font-size:16px;cursor:pointer;color:var(--ink-soft);min-width:32px;min-height:32px;}
.order-toast strong{display:block;color:var(--ink);}

/* MOBILE */
@media (max-width:800px){
  nav.primary-nav{position:fixed;top:59px;left:0;right:0;background:var(--surface);flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--border);max-height:0;overflow:hidden;transition:max-height .2s ease;}
  nav.primary-nav.open{max-height:420px;}
  nav.primary-nav a{padding:14px 20px;border-bottom:1px solid var(--border);}
  .nav-cta{margin:14px 20px;text-align:center;}
  .hamburger{display:block;}
  body{font-size:17px;}
}
@media (max-width:480px){
  .btn{width:100%;}
}