/* Green Heating Solutions — site styles
   Palette: spruce (brand green), lime (brand accent), ember (hot supply), slate (cool return),
   birch neutrals with a slight green bias. Light + dark themes. */

:root{
  --bg:#f4f6f2;
  --surface:#ffffff;
  --surface-2:#eaeee8;
  --ink:#14231c;
  --muted:#4b5b53;
  --line:#d3dbd4;
  --spruce:#143e30;
  --spruce-2:#1e5642;
  --lime:#d5ed8a;
  --ember:#c4531c;
  --slate:#4f7489;
  --accent-text:#2f6b2a;

  --btn-bg:var(--spruce); --btn-fg:#ffffff; --btn-hover:#1e5642;
  --ghost-line:#b9c6bd;
  --band-bg:#143e30; --band-ink:#eef4ef; --band-muted:#bcd0c4; --band-line:#2f5c4a;

  /* diagram */
  --d-soil:#e7e1d3; --d-ground:#8a7d63; --d-tree:#c9d6cb; --d-casing:#3a3a36;
  --d-steel:#3d4744; --d-steel-2:#a9b1ae; --d-water:#b9dcef; --d-door:#26302d; --d-fire:#e8742f;
  --d-house:#ffffff; --d-roof:#6f7b75; --d-basement:#f2efe8; --d-window:#dfe9ee; --d-appliance:#dfe4e0; --d-label:#14231c;

  --radius:10px;
  --font:"Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1713; --surface:#16211c; --surface-2:#1b2822; --ink:#e7eee9; --muted:#a6b5ad; --line:#2a3a32;
    --accent-text:#c6e27a; --btn-bg:#d5ed8a; --btn-fg:#10261d; --btn-hover:#e3f4ae; --ghost-line:#3d5147;
    --band-bg:#0b1f17; --band-ink:#eef4ef; --band-muted:#a9c0b3; --band-line:#244a3a;
    --d-soil:#2a261e; --d-ground:#7c6f55; --d-tree:#233329; --d-casing:#0b0d0c; --d-steel:#56625e; --d-steel-2:#7f8986;
    --d-water:#2d5a70; --d-door:#111614; --d-house:#1c2924; --d-roof:#3e4a44; --d-basement:#141d19; --d-window:#2a3a40;
    --d-appliance:#31403a; --d-label:#e7eee9; --ember:#ee7a3f; --slate:#7fa6bd;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0f1713; --surface:#16211c; --surface-2:#1b2822; --ink:#e7eee9; --muted:#a6b5ad; --line:#2a3a32;
  --accent-text:#c6e27a; --btn-bg:#d5ed8a; --btn-fg:#10261d; --btn-hover:#e3f4ae; --ghost-line:#3d5147;
  --band-bg:#0b1f17; --band-ink:#eef4ef; --band-muted:#a9c0b3; --band-line:#244a3a;
  --d-soil:#2a261e; --d-ground:#7c6f55; --d-tree:#233329; --d-casing:#0b0d0c; --d-steel:#56625e; --d-steel-2:#7f8986;
  --d-water:#2d5a70; --d-door:#111614; --d-house:#1c2924; --d-roof:#3e4a44; --d-basement:#141d19; --d-window:#2a3a40;
  --d-appliance:#31403a; --d-label:#e7eee9; --ember:#ee7a3f; --slate:#7fa6bd;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:1.0625rem;line-height:1.6;font-variation-settings:"wdth" 100}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--font);margin:0;line-height:1.02;letter-spacing:-.02em;text-wrap:balance}
h1,h2{font-weight:800;font-stretch:72%;font-variation-settings:"wdth" 72}
h3{font-weight:700;font-variation-settings:"wdth" 88;letter-spacing:-.01em}
p{margin:0}
.mono{font-family:var(--mono);font-size:.88em;letter-spacing:0}
.small{font-size:.875rem;color:var(--muted)}
.select{user-select:all}
:focus-visible{outline:3px solid var(--ember);outline-offset:3px;border-radius:4px}
.skip{position:fixed;left:16px;top:-80px;z-index:50;background:var(--surface);color:var(--ink);padding:10px 14px;border-radius:6px}
.skip:focus{top:12px}

.wrap{width:100%;max-width:1240px;margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.eyebrow{font-family:var(--mono);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);margin-bottom:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 20px;border-radius:8px;font:inherit;font-weight:650;font-size:.975rem;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,transform .15s;white-space:nowrap}
.btn-primary{background:var(--btn-bg);color:var(--btn-fg)}
.btn-primary:hover{background:var(--btn-hover)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ghost-line)}
.btn-ghost:hover{border-color:var(--ink)}
.btn-sm{min-height:42px;padding:9px 16px;font-size:.92rem}
.btn-lg{min-height:54px;padding:14px 26px;font-size:1.02rem}
.btn:active{transform:translateY(1px)}
.linkbtn{background:none;border:0;padding:0;font:inherit;font-size:.92rem;color:var(--accent-text);text-decoration:underline;text-underline-offset:3px;cursor:pointer}

/* Header */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.mark{width:42px;height:42px}
.mark-bg{fill:#143e30}.mark-flame{fill:#d5ed8a}.mark-core{fill:#143e30}
.wordmark{font-weight:800;font-variation-settings:"wdth" 80;text-transform:uppercase;letter-spacing:.02em;font-size:1.05rem;line-height:1}
.wordmark small{display:block;font-family:var(--mono);font-weight:500;font-size:.62rem;letter-spacing:.32em;margin-top:5px;color:var(--muted)}
.nav{display:flex;gap:26px;margin-left:auto;font-weight:600;font-size:.95rem}
.nav a{text-decoration:none;color:var(--muted);padding-block:6px}
.nav a:hover{color:var(--ink)}
.header-call{min-height:42px;padding:8px 14px;font-variant-numeric:tabular-nums}
.header-call svg{width:16px;height:16px;fill:currentColor}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,72px);align-items:center;padding-block:clamp(32px,5vw,72px) clamp(24px,3vw,40px)}
.hero h1{font-size:clamp(3rem,7.4vw,6.4rem);letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--ember)}
.lede{font-size:clamp(1.06rem,1.4vw,1.22rem);color:var(--muted);max-width:34em;margin-top:24px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-facts{list-style:none;padding:0;margin:40px 0 0;display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line)}
.hero-facts li{flex:1 1 0;min-width:120px;padding:16px 16px 0 0;font-size:.92rem;color:var(--muted)}
.hero-facts li+li{padding-left:16px;border-left:1px solid var(--line)}
.hero-facts strong{display:block;font-size:1.35rem;color:var(--ink);font-variation-settings:"wdth" 80;font-weight:800;line-height:1.2}
.hero-photo{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface-2);aspect-ratio:4/5;max-height:680px;max-width:100%}
.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:50% 40%}
.hero-photo figcaption{position:absolute;left:0;bottom:0;right:0;padding:48px 16px 16px;background:linear-gradient(to top,rgba(8,20,14,.72),rgba(8,20,14,0));display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:#fff;font-size:.9rem;font-weight:500;text-shadow:0 1px 8px rgba(0,0,0,.55)}
.plate{font-family:var(--mono);font-size:.7rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;background:#143e30;color:#d5ed8a;padding:6px 9px;border-radius:4px;text-shadow:none}

/* Hero slideshow */
.slideshow .slide{position:absolute;inset:0;margin:0;opacity:0;transition:opacity .7s ease;pointer-events:none}
.slideshow .slide.is-active{opacity:1;pointer-events:auto}
.slideshow .slide img{width:100%;height:100%;object-fit:cover;object-position:50% 45%}
.slideshow .slide figcaption{padding-bottom:44px}
.ss-btn{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:0;background:rgba(10,24,17,.55);color:#fff;display:grid;place-items:center;cursor:pointer;opacity:.85;transition:opacity .2s,background .2s;z-index:2}
.ss-btn:hover{opacity:1;background:rgba(10,24,17,.8)}
.ss-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.ss-prev{left:12px}.ss-next{right:12px}
.ss-dots{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:center;gap:8px;z-index:2}
.dot{width:9px;height:9px;padding:0;border-radius:50%;border:1.5px solid #fff;background:transparent;cursor:pointer;opacity:.85}
.dot.is-active{background:#d5ed8a;border-color:#d5ed8a}

/* Sections */
.section{padding-block:clamp(64px,9vw,120px)}
.section-tint{background:var(--surface-2)}
.section-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:24px 56px;align-items:end;margin-bottom:clamp(32px,4vw,52px)}
.section-head h2{font-size:clamp(2.3rem,4.6vw,3.9rem)}
.section-head>p{color:var(--muted);max-width:32em}

/* Boilers */
.boiler-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2.5vw,32px)}
.boiler{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:grid;grid-template-rows:auto 1fr}
.boiler-img{background:#fff;height:340px;padding:24px;overflow:hidden;border-bottom:1px solid var(--line)}
.boiler-img img{width:100%;height:100%;object-fit:contain;min-height:0}
.boiler-body{padding:clamp(20px,2.6vw,32px);display:flex;flex-direction:column}
.maker{font-family:var(--mono);font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-text);margin-bottom:8px}
.boiler h3{font-size:clamp(1.7rem,2.6vw,2.2rem)}
.boiler-body>p:not(.maker){color:var(--muted);margin-top:14px;max-width:38em}
.specs{margin:22px 0 26px;font-size:.94rem}
.specs div{display:grid;grid-template-columns:118px minmax(0,1fr);gap:12px;padding-block:11px;border-top:1px solid var(--line)}
.specs div:last-child{border-bottom:1px solid var(--line)}
.specs dt{color:var(--muted)}
.specs dd{margin:0;font-weight:600}
.boiler-links{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}
.ext{font-size:.9rem;color:var(--muted);text-underline-offset:3px}
.ext:hover{color:var(--ink)}
.fineprint{font-size:.84rem;color:var(--muted);margin-top:22px;max-width:60em}

/* System diagram */
.diagram-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.diagram{display:block;width:100%;min-width:680px;height:auto}
.d-soil{fill:var(--d-soil)} .d-ground{stroke:var(--d-ground);stroke-width:2}
.d-tree path{fill:var(--d-tree)}
.d-casing{fill:none;stroke:var(--d-casing);stroke-width:36;stroke-linecap:round;stroke-linejoin:round}
.d-supply,.d-return{fill:none;stroke-width:6;stroke-linecap:round;stroke-linejoin:round}
.d-supply{stroke:var(--ember)} .d-return{stroke:var(--slate)}
.d-thin{stroke-width:4}
.d-steel{fill:var(--d-steel)} .d-steel-2{fill:var(--d-steel-2)}
.d-water{fill:var(--d-water);opacity:.55}
.d-door{fill:var(--d-door)} .d-fire{fill:var(--d-fire)}
.d-pump{fill:var(--surface);stroke:var(--ink);stroke-width:3} .d-pump-arrow{fill:var(--ink)}
.d-house{fill:var(--d-house);stroke:var(--d-label);stroke-width:2.5}
.d-roof{fill:var(--d-roof)}
.d-window{fill:var(--d-window);stroke:var(--d-label);stroke-width:1.5}
.d-basement{fill:var(--d-basement);stroke:var(--d-label);stroke-width:2.5}
.d-header-s{fill:var(--ember)} .d-header-r{fill:var(--slate)}
.d-radiator{fill:var(--surface);stroke:var(--d-label);stroke-width:2}
.d-radiator-fins{stroke:var(--ember);stroke-width:2.5;stroke-linecap:round}
.d-manifold{fill:var(--surface);stroke:var(--d-label);stroke-width:2}
.d-mlabel{fill:var(--d-label);font-family:var(--font);font-weight:700;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.d-inset{opacity:0;transform:translate(0,14px) scale(.9);transform-box:fill-box;transform-origin:100% 100%;transition:opacity .22s ease,transform .22s ease;pointer-events:none}
.diagram.show-manifold .d-inset-manifold,.diagram.show-radiant .d-inset-radiant,.diagram.show-tank .d-inset-tank,.diagram.show-boiler .d-inset-boiler,.diagram.show-radiator .d-inset-radiator,.diagram.show-pipe .d-inset-pipe{opacity:1;transform:none}
.hotspot{cursor:pointer;outline:none}
.hotspot[data-inset="manifold"]:focus-visible .d-radiator{fill:var(--surface);stroke:var(--d-label);stroke-width:2}
.d-radiator-fins{stroke:var(--ember);stroke-width:2.5;stroke-linecap:round}
.d-manifold{stroke:var(--ember);stroke-width:3}
.d-hot-area{fill:transparent;stroke:transparent;stroke-width:2;stroke-dasharray:6 5;transition:stroke .2s}
.d-hot-area:hover,.d-hot-area:focus-visible,.diagram.show-radiant .d-hot-area[data-inset="radiant"],.diagram.show-tank .d-hot-area[data-inset="tank"],.diagram.show-boiler .d-hot-area[data-inset="boiler"],.diagram.show-radiator .d-hot-area[data-inset="radiator"],.diagram.show-pipe .d-hot-area[data-inset="pipe"]{stroke:color-mix(in srgb,var(--ember) 60%,transparent)}
.d-inset-frame{fill:var(--surface);stroke:var(--d-label);stroke-width:2}
.d-leader{fill:none;stroke:var(--d-label);stroke-width:1.5;stroke-dasharray:4 4;opacity:.7}
.d-caption{fill:var(--d-label);font-family:var(--font);font-weight:600;font-size:14px;paint-order:stroke;stroke:var(--surface);stroke-width:5px;stroke-linejoin:round}
.d-port{fill:var(--d-basement);stroke:var(--d-label);stroke-width:1.5}
.d-over{paint-order:stroke;filter:drop-shadow(1.5px 0 0 var(--d-basement)) drop-shadow(-1.5px 0 0 var(--d-basement))}
.d-ring{fill:color-mix(in srgb,var(--d-water) 45%,transparent);stroke:var(--slate);stroke-width:2.5;stroke-dasharray:7 5}
.diagram[data-active] .part.p-treatment{opacity:0}
.diagram[data-active="treatment"] .part.p-treatment{opacity:1}
.d-appliance{fill:var(--d-appliance);stroke:var(--d-label);stroke-width:1.5}
.d-hx{fill:var(--surface);stroke:var(--d-label);stroke-width:2}
.d-hx-zig{fill:none;stroke:var(--ember);stroke-width:2.5;stroke-linejoin:round}
.d-hx-lines{stroke:var(--d-label);stroke-width:1.5;opacity:.6}
.d-label text,.d-legend text{fill:var(--d-label);font-family:var(--font);font-weight:650;font-size:17px}
.d-legend text{font-size:15px;font-weight:500}
.diagram .part{transition:opacity .25s ease,filter .25s ease}
.diagram[data-active] .part{opacity:.2}
.diagram[data-active="pumps"] .p-pumps,
.diagram[data-active="pipe"] .p-pipe,
.diagram[data-active="glycol"] .p-glycol,
.diagram[data-active="treatment"] .p-treatment,
.diagram[data-active="hx"] .p-hx,
.diagram[data-active="manifold"] .p-manifold{opacity:1;filter:drop-shadow(0 0 6px color-mix(in srgb,var(--ember) 70%,transparent))}
.diagram[data-active="treatment"] .p-treatment{opacity:.95}
.diagram[data-active="pipe"] .p-glycol{opacity:.9}
.diagram[data-active="manifold"] .p-glycol,.diagram[data-active="manifold"] .p-hx{opacity:1}

.parts{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.parts button{width:100%;height:100%;text-align:left;background:var(--surface);border:1.5px solid var(--line);border-radius:var(--radius);padding:16px 18px;font:inherit;color:inherit;cursor:pointer;display:flex;flex-direction:column;gap:6px;transition:border-color .15s,background .15s}
.parts button:hover{border-color:var(--ghost-line)}
.parts button[aria-pressed="true"]{border-color:var(--ember);background:color-mix(in srgb,var(--ember) 7%,var(--surface))}
.part-name{font-weight:750;font-size:1.12rem;font-variation-settings:"wdth" 85;display:flex;align-items:center;gap:8px}
.part-name::before{content:"";width:10px;height:10px;border-radius:50%;border:2px solid var(--ghost-line);flex-shrink:0}
.parts button[aria-pressed="true"] .part-name::before{background:var(--ember);border-color:var(--ember)}
.part-desc{font-size:.92rem;color:var(--muted);line-height:1.5}

.parts-foot{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(12px,2vw,20px);margin-top:clamp(28px,4vw,48px);align-items:stretch}
.shelf{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.shelf img{width:100%;aspect-ratio:1/1;object-fit:cover}
.shelf-product img{object-fit:contain;background:#fff;padding:14px}
.parts-foot .parts-cta{grid-column:span 1}
.shelf figcaption{padding:12px 14px;font-size:.9rem;font-weight:600}
.parts-cta{background:var(--band-bg);color:var(--band-ink);border-radius:var(--radius);padding:clamp(22px,3vw,34px);display:flex;flex-direction:column;justify-content:center;gap:14px}
.parts-cta h3{font-size:clamp(1.6rem,2.4vw,2.1rem);font-weight:800;font-variation-settings:"wdth" 75}
.parts-cta p{color:var(--band-muted)}
.parts-cta .btn-primary{background:#d5ed8a;color:#10261d;align-self:stretch;white-space:normal;text-align:left}
.parts-cta .btn-primary:hover{background:#e3f4ae}
.parts-cta .small{color:var(--band-muted)}
.parts-cta .small a{color:var(--band-ink)}

/* Installation */
.section-dark{background:var(--band-bg);color:var(--band-ink)}
.section-dark .eyebrow{color:#d5ed8a}
.install-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(36px,6vw,96px);align-items:start}
.install-intro h2{font-size:clamp(2.3rem,4.6vw,3.9rem)}
.install-intro>p{color:var(--band-muted);margin-top:20px;max-width:32em}
.install-photo{margin:32px 0 0;border-radius:var(--radius);overflow:hidden;background:#0c2419}
.install-photo img{width:100%;aspect-ratio:1200/965;object-fit:cover}
.install-photo figcaption{padding:12px 16px;font-size:.88rem;color:var(--band-muted)}
.steps{list-style:none;margin:0;padding:0;counter-reset:step}
.steps li{counter-increment:step;display:grid;grid-template-columns:56px minmax(0,1fr);column-gap:18px;padding-block:26px;border-top:1px solid var(--band-line)}
.steps li:last-child{border-bottom:1px solid var(--band-line)}
.steps li::before{content:counter(step);grid-row:span 2;width:44px;height:44px;border-radius:50%;border:1.5px solid #d5ed8a;color:#d5ed8a;display:grid;place-items:center;font-family:var(--mono);font-weight:600;font-size:.95rem}
.steps h3{font-size:1.45rem;align-self:center}
.steps p{color:var(--band-muted);margin-top:8px;font-size:.98rem}

/* Our work gallery */
.gallery{position:relative}
.track{list-style:none;margin:0;padding:0 0 6px;display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 2*16px)/3);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;overscroll-behavior-x:contain;scrollbar-width:none;outline:none}
.track::-webkit-scrollbar{display:none}
.track:focus-visible{outline:3px solid var(--ember);outline-offset:4px;border-radius:var(--radius)}
.slide{scroll-snap-align:start;min-width:0}
.slide figure{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;background:var(--surface-2);aspect-ratio:3/4}
.slide img{width:100%;height:100%;object-fit:cover}
.slide figcaption{position:absolute;left:0;right:0;bottom:0;padding:56px 16px 16px;background:linear-gradient(to top,rgba(8,20,14,.78),rgba(8,20,14,0));color:#fff;font-weight:600;font-size:.98rem;line-height:1.35;display:flex;gap:10px;align-items:baseline}
.slide-n{font-family:var(--mono);font-size:.72rem;font-weight:600;color:#d5ed8a;letter-spacing:.06em;flex-shrink:0}
.gallery-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:18px}
.gallery-count{font-family:var(--mono);font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.gallery-btns{display:flex;gap:10px}
.gbtn{width:52px;height:52px;border-radius:50%;border:1.5px solid var(--ghost-line);background:var(--surface);color:var(--ink);font:inherit;font-size:1.2rem;cursor:pointer;transition:border-color .15s,background .15s,opacity .15s}
.gbtn:hover:not(:disabled){border-color:var(--ink)}
.gbtn:disabled{opacity:.35;cursor:default}
@media (max-width:860px){.track{grid-auto-columns:calc((100% - 16px)/2)}}
@media (max-width:620px){.track{grid-auto-columns:84%;gap:12px}}
@media (prefers-reduced-motion:reduce){.track{scroll-behavior:auto}}

/* Quote planner */
.quote-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:start}
.quote-main h2{font-size:clamp(2.3rem,4.6vw,3.9rem)}
.quote-lede{color:var(--muted);margin-top:16px;max-width:36em}
.qform{margin-top:32px;display:grid;gap:20px}
.field-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0;border:0;padding:0;margin:0}
.field label,.field legend{font-weight:650;font-size:.95rem;padding:0}
.field legend{margin-bottom:10px}
.opt{font-weight:400;color:var(--muted)}
input:not([type=checkbox]):not([type=radio]),select,textarea{font:inherit;font-size:1rem;color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:8px;padding:12px 14px;min-height:48px;width:100%;transition:border-color .15s}
input::placeholder,textarea::placeholder{color:color-mix(in srgb,var(--muted) 75%,transparent)}
input:hover,select:hover,textarea:hover{border-color:var(--ghost-line)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ember);box-shadow:0 0 0 3px color-mix(in srgb,var(--ember) 22%,transparent)}
textarea{resize:vertical;min-height:96px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative;cursor:pointer}
.chip input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chip span{display:inline-flex;align-items:center;min-height:42px;padding:8px 16px;border:1.5px solid var(--line);border-radius:999px;background:var(--surface);font-size:.95rem;font-weight:550;transition:all .15s}
.chip:hover span{border-color:var(--ghost-line)}
.chip input:checked+span{background:var(--spruce);border-color:var(--spruce);color:#fff}
.chip input:focus-visible+span{outline:3px solid var(--ember);outline-offset:2px}
.qform .btn-lg{justify-self:start;margin-top:4px}
.qresult{margin-top:32px;background:var(--surface);border:1.5px solid var(--ember);border-radius:var(--radius);padding:clamp(18px,3vw,28px)}
.qresult-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.qresult h3{font-size:1.5rem}
.qresult pre{white-space:pre-wrap;word-break:break-word;font-family:var(--mono);font-size:.86rem;line-height:1.6;background:var(--surface-2);border-radius:8px;padding:16px;margin:16px 0 0;max-height:360px;overflow:auto;color:var(--ink)}
.qresult .actions{margin-top:18px}
.qresult .small{margin-top:10px}
.qresult .small:empty{display:none}

.contact-card{position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(20px,3vw,30px);display:flex;flex-direction:column}
.contact-line{display:block;text-decoration:none;padding-block:14px;border-top:1px solid var(--line)}
.contact-line span{display:block;font-family:var(--mono);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.contact-line strong{display:block;font-size:clamp(1.25rem,2vw,1.6rem);font-weight:750;font-variation-settings:"wdth" 82;margin-top:4px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.contact-line:hover strong{color:var(--accent-text)}
.area{border-top:1px solid var(--line);padding-top:18px;margin-top:4px}
.area .eyebrow{margin-bottom:8px}
.area p:not(.eyebrow){color:var(--muted);font-size:.95rem}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);gap:clamp(28px,5vw,80px);align-items:start}
.faq-grid h2{font-size:clamp(2.3rem,4.6vw,3.6rem)}
.faq-note{color:var(--muted);margin-top:18px}
.faq-note a{color:var(--ink);font-weight:600}
.faq details{border-top:1px solid var(--ghost-line)}
.faq details:last-child{border-bottom:1px solid var(--ghost-line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;position:relative;font-weight:700;font-size:1.15rem;font-variation-settings:"wdth" 90;line-height:1.3}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:12px;height:12px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq details p{color:var(--muted);padding:0 0 22px;max-width:40em}

/* Footer */
.site-footer{border-top:1px solid var(--line);padding-block:36px}
.footer-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 32px;align-items:center}
.footer-brand strong{display:block;font-weight:800;font-variation-settings:"wdth" 80;text-transform:uppercase;letter-spacing:.02em}
.footer-brand span{color:var(--muted);font-size:.9rem}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:.95rem}
.footer-links a{color:var(--muted);text-underline-offset:3px}
.footer-links a:hover{color:var(--ink)}
.copy{grid-column:1/-1;font-size:.82rem;color:var(--muted)}

.mobile-bar{display:none}

/* Logo */
.logo{height:54px;width:auto;display:block}
.logo-dark{display:none}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .logo-light{display:none}:root:not([data-theme="light"]) .logo-dark{display:block}}
:root[data-theme="dark"] .logo-light{display:none}
:root[data-theme="dark"] .logo-dark{display:block}
.site-header .header-inner{min-height:80px}

/* Legal page */
.legal{max-width:780px;padding-block:clamp(40px,6vw,80px)}
.legal h1{font-size:clamp(2.6rem,6vw,4.2rem)}
.legal h2{font-size:1.5rem;font-weight:750;font-variation-settings:"wdth" 88;margin-top:40px}
.legal p{margin-top:14px;color:var(--muted)}
.legal p strong,.legal a{color:var(--ink)}
.legal ul{margin:12px 0 0;padding-left:22px;color:var(--muted)}
.legal li{margin-top:6px}

/* Responsive */
@media (max-width:1040px){
  .nav{gap:18px;font-size:.9rem}
  .parts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .parts-foot{grid-template-columns:repeat(3,minmax(0,1fr))}
  .parts-foot .parts-cta{grid-column:1/-1}
}
@media (max-width:860px){
  .nav{display:none}
  .header-call{margin-left:auto}
  .hero{grid-template-columns:1fr}
  .hero-photo{aspect-ratio:4/3;max-height:none}
  .section-head,.install-grid,.quote-grid,.faq-grid{grid-template-columns:1fr}
  .boiler-grid{grid-template-columns:1fr}
  .contact-card{position:static}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:620px){
  body{font-size:1rem;padding-bottom:calc(76px + env(safe-area-inset-bottom,0px))}
  .header-inner{min-height:62px;gap:12px}
  .logo{height:42px}
  .wordmark{font-size:.92rem}
  .header-call{font-size:.85rem;padding:7px 11px;min-height:38px}
  .hero-facts li{min-width:0;padding-right:10px}
  .hero-facts li+li{padding-left:10px}
  .hero-facts strong{font-size:1.15rem}
  .boiler-img{height:260px}
  .specs div{grid-template-columns:96px minmax(0,1fr)}
  .parts{grid-template-columns:1fr}
  .parts-foot{grid-template-columns:repeat(2,minmax(0,1fr))}
  .parts-foot .parts-cta{grid-column:1/-1}
  .field-row{grid-template-columns:1fr}
  .qform .btn-lg{justify-self:stretch}
  .steps li{grid-template-columns:44px minmax(0,1fr);column-gap:14px}
  .steps li::before{width:36px;height:36px;font-size:.85rem}
  .mobile-bar{display:grid;grid-template-columns:1fr 2fr;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:30;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line)}
}
@media (max-width:380px){
  .logo{height:38px}
  .header-call svg{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}