/* PeakLine Heating Air Aurora — "Ember & Frost" design system
   Tokens: Ink #0D1317 · Ember #E4572E · Ember Deep #B23E1D · Glacier #2A9D8F
   Paper #F7F4EE · Frost #EDF3F6 · Steel #5B6B7A · Gold #C9A227
   RULE: never pure #FFFFFF. One accent per viewport. */
@font-face{font-family:'Sora';font-weight:700;font-style:normal;font-display:swap;src:url('../fonts/Sora-700.woff2') format('woff2')}
@font-face{font-family:'Sora';font-weight:800;font-style:normal;font-display:swap;src:url('../fonts/Sora-800.woff2') format('woff2')}
@font-face{font-family:'Inter';font-weight:400;font-style:normal;font-display:swap;src:url('../fonts/Inter-400.woff2') format('woff2')}
@font-face{font-family:'Inter';font-weight:500;font-style:normal;font-display:swap;src:url('../fonts/Inter-500.woff2') format('woff2')}
@font-face{font-family:'Inter';font-weight:600;font-style:normal;font-display:swap;src:url('../fonts/Inter-600.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-weight:500;font-style:normal;font-display:swap;src:url('../fonts/JetBrainsMono-500.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-weight:700;font-style:normal;font-display:swap;src:url('../fonts/JetBrainsMono-700.woff2') format('woff2')}

:root{
  --ink:#0D1317; --ember:#E4572E; --ember-deep:#B23E1D; --glacier:#2A9D8F;
  --paper:#F7F4EE; --frost:#EDF3F6; --steel:#5B6B7A; --gold:#C9A227;
  --radius:14px; --shadow:0 18px 50px rgba(13,19,23,.16);
  --font-d:'Sora',system-ui,sans-serif; --font-b:'Inter',system-ui,sans-serif; --font-m:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);font-size:17px;line-height:1.65;background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius)}
a{color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
h1,h2,h3{font-family:var(--font-d);line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(38px,5.4vw,68px);font-weight:800}
h2{font-size:clamp(30px,3.6vw,42px);font-weight:700;margin-bottom:14px}
h3{font-size:22px;font-weight:700;margin-bottom:8px}
p{margin:0 0 16px}
.mono{font-family:var(--font-m)}
.eyebrow{font-family:var(--font-m);font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ember);margin-bottom:12px}
.eyebrow.glacier{color:var(--glacier)}
.section{padding:76px 0}
.section-ink{background:var(--ink);color:var(--paper)}
.section-ink h2{color:#fff}
.section-frost{background:var(--frost)}
.lead{font-size:19px;color:var(--steel);max-width:680px}
.section-ink .lead{color:#c9d4d4}

/* Header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(13,19,23,.96);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-in{display:flex;align-items:center;gap:18px;padding:12px 22px;max-width:1280px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand-logo{height:46px;width:auto;border-radius:0}
.site-footer .brand-logo{height:54px;margin-bottom:14px}
.brand-mark{font-family:var(--font-d);font-weight:800;font-size:20px;background:var(--ember);color:#fff;width:42px;height:42px;display:grid;place-items:center;border-radius:10px;letter-spacing:-.02em}
.brand-text{font-family:var(--font-d);font-weight:800;font-size:19px;line-height:1.05;display:flex;flex-direction:column}
.brand-text small{font-family:var(--font-m);font-weight:500;font-size:10.5px;letter-spacing:.18em;color:#9fb0b0;text-transform:uppercase}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{color:#d7e0e0;text-decoration:none;font-size:14.5px;font-weight:500;padding:10px 12px;border-radius:8px}
.main-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.header-call{margin-left:8px;white-space:nowrap}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:10px;min-width:48px;min-height:48px;font-size:22px;cursor:pointer}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-d);font-weight:700;font-size:16px;text-decoration:none;border-radius:12px;padding:15px 26px;min-height:52px;border:2px solid transparent;cursor:pointer;transition:transform .12s ease,background .12s ease}
.btn:active{transform:scale(.98)}
.btn-ember{background:var(--ember);color:#fff}
.btn-ember:hover{background:var(--ember-deep)}
.btn-glacier{background:var(--glacier);color:#fff}
.btn-glacier:hover{background:#207a6f}
.btn-ghost{background:transparent;color:var(--paper);border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff}
.btn-ghost-dark{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost-dark:hover{background:var(--ink);color:#fff}
.btn-gold{background:var(--gold);color:var(--ink)}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--paper)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;padding:84px 0 64px}
.hero .eyebrow{color:var(--ember)}
.hero-sub{font-size:19px;color:#c9d4d4;max-width:560px;margin:18px 0 28px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media img{box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.12)}
.hero-compact .hero-grid{padding:56px 0 44px;grid-template-columns:1fr}
.hero-compact .hero-sub{margin-bottom:22px}
.live-strip{background:#080c0e;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);overflow:hidden}
.live-strip .wrap{display:flex;gap:34px;padding:12px 22px;font-family:var(--font-m);font-size:13px;color:#9fb0b0;white-space:nowrap;overflow-x:auto}
.live-strip b{color:var(--ember);font-weight:700}
.live-strip.glacier-strip b{color:var(--glacier)}

/* Breadcrumb */
.crumbs{font-family:var(--font-m);font-size:12.5px;color:var(--steel);padding:18px 0 0}
.crumbs a{color:var(--steel);text-decoration:none;border-bottom:1px dotted var(--steel)}
.hero .crumbs,.section-ink .crumbs{color:#9fb0b0}
.hero .crumbs a,.section-ink .crumbs a{color:#9fb0b0;border-color:#9fb0b0}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:34px}
.card{background:var(--paper);border:1px solid rgba(13,19,23,.1);border-radius:var(--radius);padding:28px;text-decoration:none;display:block;transition:transform .15s ease,box-shadow .15s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-ink{background:#141c21;color:var(--paper);border-color:rgba(255,255,255,.08)}
.card h3{margin-bottom:8px}
.card p{color:var(--steel);font-size:15.5px;margin-bottom:14px}
.card-ink p{color:#aebbbb}
.card .card-link{font-family:var(--font-m);font-size:13px;font-weight:700;color:var(--ember);letter-spacing:.06em}
.card .card-link.glacier{color:var(--glacier)}

/* Checklist */
.checklist{list-style:none;margin:22px 0;display:grid;gap:12px}
.checklist li{position:relative;padding-left:38px;font-size:16.5px}
.checklist li::before{content:"✓";position:absolute;left:0;top:1px;font-family:var(--font-m);font-weight:700;color:var(--ember);background:rgba(228,87,46,.12);width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:14px}
.checklist.glacier li::before{color:var(--glacier);background:rgba(42,157,143,.12)}

/* Price */
.price{font-family:var(--font-m);font-weight:700;color:var(--ember);font-size:1.06em}
.price.glacier{color:var(--glacier)}
.tbd{font-family:var(--font-m);font-weight:700;border-bottom:2px dashed var(--ember);padding:0 2px;white-space:nowrap}
.price-table{width:100%;border-collapse:collapse;margin:24px 0;background:var(--paper);border-radius:var(--radius);overflow:hidden;border:1px solid rgba(13,19,23,.1)}
.price-table th,.price-table td{padding:15px 18px;text-align:left;border-bottom:1px solid rgba(13,19,23,.08);font-size:15.5px}
.price-table th{font-family:var(--font-m);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);background:rgba(13,19,23,.04)}
.price-table tr:last-child td{border-bottom:none}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:30px;counter-reset:step}
.step{background:#141c21;color:var(--paper);border-radius:var(--radius);padding:26px;position:relative}
.step::before{counter-increment:step;content:"0" counter(step);font-family:var(--font-m);font-weight:700;color:var(--ember);font-size:15px;letter-spacing:.1em;display:block;margin-bottom:10px}
.step.glacier::before{color:var(--glacier)}
.step h3{font-size:18px}
.step p{color:#aebbbb;font-size:15px;margin:0}

/* FAQ */
.faq{border:1px solid rgba(13,19,23,.12);border-radius:12px;margin-bottom:12px;background:var(--paper);overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:600;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:56px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-m);font-size:22px;color:var(--ember);flex-shrink:0}
.faq[open] summary::after{content:"–"}
.faq .faq-a{padding:0 22px 20px;color:var(--steel);font-size:16px}

/* Tech card */
.tech-card{display:flex;gap:20px;align-items:center;background:#141c21;color:var(--paper);border-radius:var(--radius);padding:24px;margin-top:34px}
.tech-card img{width:96px;height:96px;object-fit:cover;border-radius:50%;flex-shrink:0}
.tech-card .t-name{font-family:var(--font-d);font-weight:700;font-size:18px}
.tech-card .t-meta{font-family:var(--font-m);font-size:12.5px;color:#9fb0b0;margin:4px 0 8px}
.tech-card p{color:#c9d4d4;font-size:15px;margin:0}

/* Guarantee badge */
.guarantee-badge{display:inline-flex;align-items:center;gap:10px;border:2px solid var(--gold);border-radius:12px;padding:14px 20px;font-family:var(--font-m);font-size:14px;font-weight:700;color:var(--ink);background:rgba(201,162,39,.08);margin:8px 12px 8px 0}
.guarantee-badge .g-seal{font-size:22px}

/* Image captions */
.img-cap{font-family:var(--font-m);font-size:12.5px;color:var(--steel);margin-top:10px;letter-spacing:.02em}
.img-cap::before{content:"◈ ";color:var(--ember)}
figure{margin:0 0 26px}

/* Feature band */
.band{border-radius:20px;padding:54px;margin:20px 0;position:relative;overflow:hidden}
.band-ember{background:linear-gradient(135deg,var(--ink),#2a1409);color:var(--paper)}
.band-glacier{background:linear-gradient(135deg,var(--ink),#0a2a26);color:var(--paper)}
.band h2{color:#fff}
.band p{color:#c9d4d4}

/* Review wall */
.reviews-wall{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;margin-top:30px}
.review{background:var(--paper);border:1px solid rgba(13,19,23,.1);border-radius:var(--radius);padding:24px}
.review .stars{color:var(--gold);font-size:18px;letter-spacing:.1em;margin-bottom:10px}
.review p{font-size:15.5px}
.review .r-meta{font-family:var(--font-m);font-size:12px;color:var(--steel)}

/* Forms */
.lead-form{background:#141c21;border-radius:var(--radius);padding:30px;color:var(--paper);max-width:560px}
.lead-form h3{color:#fff;margin-bottom:6px}
.lead-form p{color:#aebbbb;font-size:15px}
.lead-form label{display:block;font-family:var(--font-m);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#9fb0b0;margin:16px 0 6px}
.lead-form input,.lead-form select{width:100%;padding:15px 16px;border-radius:10px;border:1px solid rgba(255,255,255,.15);background:#0d1317;color:#fff;font-size:16px;font-family:var(--font-b);min-height:52px}
.lead-form input:focus,.lead-form select:focus{outline:2px solid var(--ember);border-color:var(--ember)}
.slot-row{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0 4px}
.slot-btn{flex:1;min-width:140px;min-height:52px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:#0d1317;color:#d7e0e0;font-family:var(--font-m);font-size:13.5px;cursor:pointer;padding:12px}
.slot-btn.selected{background:var(--ember);border-color:var(--ember);color:#fff;font-weight:700}
.form-note{font-family:var(--font-m);font-size:12px;color:#7d8f8f;margin-top:14px}
.form-ok{display:none;background:rgba(42,157,143,.15);border:1px solid var(--glacier);border-radius:10px;padding:16px;margin-top:16px;font-size:15px}

/* Sticky mobile call bar */
#sticky-call{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--ink);border-top:1px solid rgba(255,255,255,.12);display:flex;transform:translateY(110%);transition:transform .25s ease;padding:10px 14px calc(10px + env(safe-area-inset-bottom));gap:10px}
#sticky-call.visible{transform:none}
#sticky-call .btn{flex:1;min-height:52px;font-size:16px}
@media(min-width:760px){#sticky-call{display:none}}

/* Footer */
.site-footer{background:var(--ink);color:#aebbbb;padding:64px 0 120px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.site-footer h4{font-family:var(--font-m);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#7d8f8f;margin-bottom:14px}
.site-footer a{color:#c9d4d4;text-decoration:none;display:block;padding:5px 0}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;font-family:var(--font-m);font-size:12.5px;color:#7d8f8f;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* Blog */
.post-body{max-width:760px;margin:0 auto}
.post-body p,.post-body li{font-size:17.5px}
.post-body ul,.post-body ol{margin:0 0 18px 24px}
.post-body li{margin-bottom:8px}
.post-meta{font-family:var(--font-m);font-size:13px;color:var(--steel);margin:14px 0 26px}
.pull-stat{background:#141c21;color:var(--paper);border-radius:var(--radius);padding:26px 30px;margin:30px 0;font-family:var(--font-m);font-size:15px}
.pull-stat b{color:var(--ember);font-size:20px}
.post-cta{background:linear-gradient(135deg,var(--ink),#241109);border-radius:20px;padding:44px;color:var(--paper);margin:44px 0;text-align:center}
.post-cta h3{color:#fff;font-size:26px;margin-bottom:10px}
.post-cta p{color:#c9d4d4}
.blog-index{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-top:30px}

/* Calculator */
.calc{background:#141c21;color:var(--paper);border-radius:20px;padding:36px;max-width:640px}
.calc label{font-family:var(--font-m);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#9fb0b0;display:block;margin:18px 0 8px}
.calc input[type=range]{width:100%;accent-color:var(--ember);min-height:44px}
.calc output{font-family:var(--font-m);font-weight:700;color:var(--ember);font-size:15px}
.calc-result{background:rgba(228,87,46,.1);border:1px solid var(--ember);border-radius:12px;padding:22px;margin-top:24px;text-align:center}
.calc-result .amt{font-family:var(--font-d);font-weight:800;font-size:44px;color:#fff}
.calc-result .per{font-family:var(--font-m);font-size:13px;color:#9fb0b0}

/* Misc */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 18px;font-size:15.5px;margin:18px 0}
.kv dt{font-family:var(--font-m);font-size:13px;color:var(--steel);text-transform:uppercase;letter-spacing:.06em}
.notice{border-left:4px solid var(--ember);background:rgba(228,87,46,.07);padding:18px 22px;border-radius:0 12px 12px 0;margin:26px 0;font-size:15.5px}
.notice.glacier{border-color:var(--glacier);background:rgba(42,157,143,.07)}
.toc{background:var(--frost);border-radius:var(--radius);padding:26px 30px;margin:30px 0}
.toc h3{font-size:16px;font-family:var(--font-m);letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin-bottom:12px}
.toc ol{margin:0 0 0 20px}
.toc li{margin-bottom:6px}
.toc a{color:var(--ink);text-decoration:none;border-bottom:1px dotted var(--steel)}
.skip-link{position:absolute;left:-9999px}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;padding:56px 0 44px}
  .hero-media{order:-1}
  .main-nav{position:fixed;top:66px;right:0;left:0;background:var(--ink);flex-direction:column;padding:12px 22px 22px;display:none;border-bottom:1px solid rgba(255,255,255,.1)}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 8px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-toggle{display:block;margin-left:auto}
  .header-call{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .two-col{grid-template-columns:1fr}
  .section{padding:54px 0}
  .band{padding:36px 24px}
}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}