/* Fernhill Heat & Solar | design tokens first, then base, layout, components, pages */
@view-transition { navigation: auto; }
@property --p { syntax: '<number>'; inherits: true; initial-value: 0; }

:root{
  --bg:#F5F7F8; --bg-2:#E9EEF0; --card:#FFFFFF;
  --ink:#0E0C16; --ink-2:#47435A; --ink-3:#65617A;
  --line:rgba(14,12,22,.14); --line-2:rgba(14,12,22,.08);
  --leaf:#2F7D4F; --leaf-hover:#276842; --on-leaf:#FFFFFF; --leaf-text:#23643D; --leaf-tint:#E3F1E8;
  --focus:#1B5BD4; --bad:#A61E16; --bad-tint:#FBE9E7; --amber:#7A4A00; --amber-tint:#FFF1D6;
  --night:#0E0C16; --night-2:#191626; --on-night:#ECEAF4; --on-night-2:#B8B4CB;
  --t1:#1A0B3B; --t2:#5B1A8C; --t3:#B4237E; --t4:#E8492E; --t5:#F79A1D; --t6:#FCE36A; --t7:#FFF8E1;
  --ramp:linear-gradient(90deg,#1A0B3B,#5B1A8C 18%,#B4237E 36%,#E8492E 54%,#F79A1D 72%,#FCE36A 88%,#FFF8E1);
  --shadow:0 1px 2px rgba(14,12,22,.06),0 12px 32px -12px rgba(14,12,22,.18);
  --panel:#1E2A3A; --panel-2:#2E4560;
  --ease:cubic-bezier(.2,.7,.1,1);
  --f-display:'Archivo','Helvetica Neue',Arial,sans-serif;
  --f-body:'Public Sans','Helvetica Neue',Arial,sans-serif;
  --gutter:clamp(16px,4vw,40px); --maxw:1240px;
  --sec:clamp(64px,9vw,120px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E0C16; --bg-2:#13111E; --card:#191626;
    --ink:#ECEAF4; --ink-2:#B8B4CB; --ink-3:#9B96B0;
    --line:rgba(236,234,244,.16); --line-2:rgba(236,234,244,.08);
    --leaf:#5FCB8A; --leaf-hover:#7ADBA0; --on-leaf:#0E0C16; --leaf-text:#6FD99A; --leaf-tint:#173026;
    --focus:#8DB4FF; --bad:#FF9A8F; --bad-tint:#2E1717; --amber:#FFC46B; --amber-tint:#2B2110;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.6);
    --panel:#3A5878; --panel-2:#5B82A8;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0E0C16; --bg-2:#13111E; --card:#191626;
  --ink:#ECEAF4; --ink-2:#B8B4CB; --ink-3:#9B96B0;
  --line:rgba(236,234,244,.16); --line-2:rgba(236,234,244,.08);
  --leaf:#5FCB8A; --leaf-hover:#7ADBA0; --on-leaf:#0E0C16; --leaf-text:#6FD99A; --leaf-tint:#173026;
  --focus:#8DB4FF; --bad:#FF9A8F; --bad-tint:#2E1717; --amber:#FFC46B; --amber-tint:#2B2110;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.6);
  --panel:#3A5878; --panel-2:#5B82A8;
  color-scheme: dark;
}
.night{
  --bg:#0E0C16; --bg-2:#13111E; --card:#191626;
  --ink:#ECEAF4; --ink-2:#B8B4CB; --ink-3:#9B96B0;
  --line:rgba(236,234,244,.18); --line-2:rgba(236,234,244,.08);
  --leaf:#5FCB8A; --leaf-hover:#7ADBA0; --on-leaf:#0E0C16; --leaf-text:#6FD99A;
  --focus:#8DB4FF;
  background:var(--bg); color:var(--ink);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.65 var(--f-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}
img,svg{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--f-display);color:var(--ink);margin:0;font-weight:800;font-stretch:115%;line-height:1.04;letter-spacing:-.015em;text-wrap:balance}
p{margin:0 0 1em;color:var(--ink-2);text-wrap:pretty}
a{color:var(--leaf-text);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
ul,ol{margin:0;padding:0}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}
.sr{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:8px;font-weight:700;text-decoration:none}
.skip:focus{top:12px}
.wrap{width:100%;max-width:calc(var(--maxw) + 2*var(--gutter));margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-block:var(--sec)}
.sec--alt{background:var(--bg-2)}
.sec--top{padding-top:clamp(28px,4vw,48px)}
.sec--tight{padding-block:calc(var(--sec) * .6)}

/* type */
.label{font:700 .8125rem/1.2 var(--f-display);font-stretch:75%;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);font-variant-numeric:tabular-nums}
.label b{color:var(--ink);font-weight:800}
.eyebrow{display:flex;align-items:center;gap:.75rem;margin-bottom:1.1rem}
.eyebrow::before{content:"";width:28px;height:3px;border-radius:2px;background:var(--ramp)}
.h-xl{font-size:clamp(2.1rem,6vw,4.6rem);font-stretch:122%;font-weight:800;line-height:1}
.h-lg{font-size:clamp(1.85rem,4.2vw,3.25rem);font-stretch:118%}
.h-md{font-size:clamp(1.3rem,2.2vw,1.65rem);font-stretch:108%;line-height:1.15}
.h-sm{font-size:1.125rem;font-stretch:100%;line-height:1.25}
.lede{font-size:clamp(1.08rem,1.6vw,1.3rem);line-height:1.55;max-width:56ch;color:var(--ink-2)}
.num{font-variant-numeric:tabular-nums}
.note{font-size:.875rem;color:var(--ink-3);line-height:1.5}
.head{max-width:760px;margin-bottom:clamp(32px,5vw,56px)}
.head p{margin-top:1rem}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;min-height:48px;padding:.8rem 1.4rem;border-radius:10px;border:2px solid transparent;background:var(--leaf);color:var(--on-leaf);font:700 1rem/1.1 var(--f-display);font-stretch:108%;text-decoration:none;cursor:pointer;transition:transform .25s var(--ease),background .2s,box-shadow .25s;will-change:transform}
.btn:hover{background:var(--leaf-hover);text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--bg)}
.btn--sm{min-height:44px;padding:.6rem 1.1rem;font-size:.9375rem}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn svg{width:18px;height:18px}
.link-arrow{display:inline-flex;align-items:center;gap:.4rem;font:700 1rem var(--f-display);font-stretch:108%;color:var(--leaf-text);text-decoration:none;min-height:44px}
.link-arrow:hover span{transform:translateX(4px)}
.link-arrow span{transition:transform .25s var(--ease)}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--line);transition:background .3s,border-color .3s}
.site-header .wrap{display:flex;align-items:center;gap:1.25rem;min-height:68px}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink);min-height:44px}
.brand svg{width:36px;height:36px;flex:none}
.brand__t{display:flex;flex-direction:column;line-height:1}
.brand__n{font:800 1.3rem/1 var(--f-display);font-stretch:122%;letter-spacing:-.02em;color:var(--ink)}
.brand__s{font:700 .6875rem/1 var(--f-display);font-stretch:75%;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-top:4px}
.nav{margin-left:auto;display:flex;align-items:center;gap:.25rem}
.nav a:not(.btn){display:inline-flex;align-items:center;min-height:44px;padding:0 .9rem;color:var(--ink);text-decoration:none;font:600 .9375rem var(--f-display);font-stretch:105%;border-radius:8px;position:relative}
.nav a:not(.btn):hover{background:var(--line-2)}
.nav a[aria-current="page"]:not(.btn)::after{content:"";position:absolute;left:.9rem;right:.9rem;bottom:6px;height:3px;border-radius:2px;background:var(--ramp)}
.nav .btn{margin-left:.5rem}
.hdr-tools{display:flex;align-items:center;gap:.4rem}
.iconbtn{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--ink);display:inline-grid;place-items:center;cursor:pointer}
.iconbtn:hover{background:var(--line-2)}
.iconbtn svg{width:20px;height:20px}
.theme-toggle .i-moon{display:none}
:root[data-theme="dark"] .theme-toggle .i-sun{display:none}
:root[data-theme="dark"] .theme-toggle .i-moon{display:block}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .theme-toggle .i-sun{display:none}:root:not([data-theme="light"]) .theme-toggle .i-moon{display:block}}
.burger{display:none}
@media (max-width:940px){
  .js .burger{display:inline-grid}
  .js .nav{position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px var(--gutter) 20px;display:none;gap:2px;box-shadow:var(--shadow)}
  .js .nav.open{display:flex}
  .js .nav a:not(.btn){font-size:1.1rem;min-height:52px}
  .js .nav .btn{margin:10px 0 0}
  .nav{flex-wrap:wrap;justify-content:flex-end}
  .site-header .wrap{flex-wrap:wrap;padding-block:8px}
  .js .site-header .wrap{flex-wrap:nowrap;padding-block:0}
  .hdr-tools{margin-left:auto}
  .js .nav{margin-left:0}
  .nav{margin-left:0;width:100%;order:3}
  .js .nav{width:auto;order:0}
}

/* hero scene */
.scene{position:relative;background:var(--night);color:var(--on-night);--p:0}
.js .scene{height:270dvh}
.scene__stage{position:relative;overflow:hidden;min-height:calc(100dvh - 68px);padding-block:clamp(20px,3vw,40px)}
.js .scene__stage{position:sticky;top:68px;height:calc(100dvh - 68px)}
.scene__stage::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(60% 70% at 70% 60%,rgba(232,73,46,.22),transparent 70%);opacity:calc(1 - var(--p) * 1.3)}
.scene__stage::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(50% 60% at 70% 62%,rgba(91,26,140,.35),transparent 72%);opacity:var(--p)}
.scene__grid{position:relative;z-index:1;height:100%;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(20px,4vw,64px);align-items:center}
.scene__copy{display:flex;flex-direction:column;gap:1.3rem;align-self:center}
.scene__copy h1{color:var(--on-night);font-size:clamp(2.1rem,5.4vw,4.5rem);font-stretch:124%;line-height:.98}
.scene__copy .lede{color:var(--on-night-2);margin:0}
.scene__ctas{display:flex;flex-wrap:wrap;gap:12px}
.scene .btn--ghost{color:var(--on-night);border-color:var(--on-night)}
.scene .btn--ghost:hover{background:var(--on-night);color:var(--night)}
.scene .label{color:var(--on-night-2)}
.scene__fig{position:relative;margin:0;display:flex;flex-direction:column;gap:12px;min-width:0}
.scene__svgwrap{position:relative;border:1px solid rgba(236,234,244,.14);border-radius:14px;overflow:hidden;background:#0A0812}
.thermal-svg{width:100%;height:auto;aspect-ratio:800/560}
.hud{position:absolute;left:9%;top:12px;right:9%;display:flex;justify-content:space-between;gap:12px;pointer-events:none;color:var(--on-night)}
.hud .label{color:#D8D4E8}
.hud__read{font:700 .8125rem var(--f-display);font-stretch:85%;letter-spacing:.1em;text-transform:uppercase;font-variant-numeric:tabular-nums;color:var(--t6)}
.scale{position:absolute;right:9%;bottom:12px;display:flex;align-items:center;gap:8px;pointer-events:none}
.scale i{display:block;width:clamp(80px,12vw,150px);height:8px;border-radius:4px;background:var(--ramp)}
.scale .label{font-size:.6875rem;color:#D8D4E8}
.scene__bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.seg{display:inline-flex;border:1px solid rgba(236,234,244,.3);border-radius:999px;padding:3px;background:rgba(14,12,22,.5)}
.seg button{min-height:44px;padding:0 1.1rem;border:0;border-radius:999px;background:transparent;color:var(--on-night);font:700 .9375rem var(--f-display);font-stretch:105%;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--on-night);color:var(--night)}
.caps{position:relative;min-height:3.2em;flex:1 1 240px;max-width:44ch}
.caps p{position:absolute;inset:0 auto auto 0;margin:0;font-size:.9375rem;line-height:1.45;color:var(--on-night)}
.cap-b{opacity:clamp(0,calc(1 - var(--p) * 2.6),1)}
.cap-a{opacity:clamp(0,calc((var(--p) - .5) * 2.6),1)}
.scrollhint{position:absolute;z-index:2;left:var(--gutter);bottom:62px;display:flex;align-items:center;gap:10px;color:var(--on-night-2);opacity:clamp(0,calc(1 - var(--p) * 6),1)}
.scrollhint i{width:1px;height:28px;background:var(--on-night-2);transform-origin:top;animation:hint 1.8s var(--ease) infinite}
@keyframes hint{0%{transform:scaleY(0)}60%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}

/* thermal svg layers (all driven by --p) */
.hot{opacity:clamp(0,calc(1 - var(--p) * 1.25),1)}
.plume{opacity:clamp(0,calc(1 - var(--p) * 1.6),1);transform:translateY(calc(var(--p) * -22px))}
.bloom{opacity:clamp(0,calc(1 - var(--p) * 1.9),1)}
.unit{opacity:clamp(0,calc((var(--p) - .32) * 2.8),1);transform:translateX(calc((1 - var(--p)) * 46px))}
.cool-glow{opacity:calc(.55 + var(--p) * .45)}
.fan{transform-origin:588px 424px;animation:spin 3.4s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.js .scene__stage .h1l{display:block;overflow:hidden;padding-bottom:.1em;margin-bottom:-.1em}
.js .scene__stage .h1l>span{display:block;animation:rise 1s var(--ease) both;animation-delay:calc(.15s + var(--i) * .12s)}
.js .scene__stage .fade{animation:fadeup .9s var(--ease) both;animation-delay:calc(.5s + var(--i,0) * .1s)}
@keyframes rise{from{transform:translateY(105%)}to{transform:none}}
@keyframes fadeup{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.js .scene__svgwrap{animation:fadeup 1.2s var(--ease) .2s both}

/* trust strip */
.trust{border-block:1px solid var(--line);background:var(--bg)}
.trust .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;padding-block:22px}
.badges{display:flex;flex-wrap:wrap;gap:10px;list-style:none}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font:700 .8125rem/1.1 var(--f-display);font-stretch:90%;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);background:var(--card)}
.badge svg{width:18px;height:18px;color:var(--leaf-text)}
.badge small{font:500 .75rem var(--f-body);letter-spacing:0;text-transform:none;color:var(--ink-3)}

/* cards & grids */
.grid{display:grid;gap:clamp(16px,2vw,24px)}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(280px,100%),1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(380px,100%),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr))}
.grid>*{min-width:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:clamp(20px,2.4vw,32px);box-shadow:var(--shadow)}
.svc{display:flex;flex-direction:column;gap:14px;text-decoration:none;color:inherit;position:relative;transition:transform .35s var(--ease),border-color .3s}
.svc:hover{transform:translateY(-4px);border-color:var(--ink)}
.svc__ic{width:100%;aspect-ratio:16/9;border-radius:10px;background:var(--bg-2);display:grid;place-items:center;overflow:hidden}
.svc__ic svg{width:86%;height:86%}
.svc h3{font-size:1.5rem}
.svc .price{font:800 1.05rem var(--f-display);font-stretch:105%;font-variant-numeric:tabular-nums;color:var(--ink)}
.svc .price small{display:block;font:500 .8125rem var(--f-body);color:var(--ink-3);margin-top:2px}
.svc p{margin:0}
.stat{border-top:3px solid var(--ink);padding-top:16px}
.stat b{display:block;font:800 clamp(2.2rem,4.5vw,3.4rem)/1 var(--f-display);font-stretch:120%;font-variant-numeric:tabular-nums;color:var(--ink);letter-spacing:-.02em}
.stat span{display:block;margin-top:10px;color:var(--ink-2);font-size:.9375rem;line-height:1.5}

/* heat-loss bar (data viz, thermal ramp permitted) */
.hl{display:flex;height:76px;border-radius:12px;overflow:hidden;gap:3px;background:var(--bg)}
.hl li{list-style:none;display:flex;align-items:flex-end;padding:10px 12px;color:#fff;font:800 1rem var(--f-display);font-stretch:100%;font-variant-numeric:tabular-nums;min-width:0;transform-origin:left}
.js .hl li{transform:scaleX(0);transition:transform 1.1s var(--ease)}
.js .hl.in li{transform:none}
.hl li:nth-child(2){transition-delay:.08s}.hl li:nth-child(3){transition-delay:.16s}.hl li:nth-child(4){transition-delay:.24s}.hl li:nth-child(5){transition-delay:.32s}.hl li:nth-child(6){transition-delay:.4s}
.hl-key{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px 20px;margin-top:16px;list-style:none}
.hl-key li{font-size:.9375rem;color:var(--ink-2);display:flex;gap:10px;align-items:baseline}
.hl-key i{width:12px;height:12px;border-radius:3px;flex:none;transform:translateY(1px)}
.hl-key b{color:var(--ink);font-variant-numeric:tabular-nums}

/* grant teaser */
.grant{position:relative;overflow:hidden;border-radius:18px;padding:clamp(28px,5vw,64px);display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center}
.grant__big{font:800 clamp(3.2rem,9.2vw,7rem)/.95 var(--f-display);font-stretch:125%;letter-spacing:-.04em;font-variant-numeric:tabular-nums;background:var(--ramp);-webkit-background-clip:text;background-clip:text;color:transparent;display:block;padding-bottom:.08em}
.grant h2,.grant p,.grant li{color:var(--on-night)}
.grant p{color:var(--on-night-2)}
.grant ul{list-style:none;display:grid;gap:10px;margin:1.2rem 0 1.6rem}
.grant li{display:flex;gap:10px;color:var(--on-night-2);font-size:1rem;line-height:1.5}
.grant li svg{width:20px;height:20px;flex:none;color:var(--leaf);margin-top:3px}
@media (max-width:820px){.grant{grid-template-columns:1fr}}

/* steps */
.steps{list-style:none;counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:0;border-top:1px solid var(--line)}
.steps li{counter-increment:s;padding:28px 24px 28px 0;position:relative;border-bottom:1px solid var(--line)}
.steps li::before{content:"0" counter(s);display:block;font:800 clamp(2.4rem,4vw,3.2rem)/1 var(--f-display);font-stretch:125%;color:transparent;-webkit-text-stroke:1.5px var(--ink);margin-bottom:14px;font-variant-numeric:tabular-nums}
.steps h3{font-size:1.25rem;margin-bottom:8px}
.steps p{margin:0;font-size:.9875rem}
@media (min-width:900px){.steps{border-bottom:0}.steps li{border-bottom:0;border-right:1px solid var(--line);padding-left:24px}.steps li:first-child{padding-left:0}.steps li:last-child{border-right:0}}

/* price table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.9875rem}
caption{text-align:left;padding:18px 20px;font:700 1rem var(--f-display);color:var(--ink)}
th,td{padding:14px 20px;text-align:left;border-top:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
th{font:700 .8125rem var(--f-display);font-stretch:80%;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);background:var(--bg-2)}
tbody th{background:transparent;color:var(--ink);font-size:.9375rem;letter-spacing:.02em;text-transform:none;font-stretch:100%}
td.num,.num{font-variant-numeric:tabular-nums}
td b{color:var(--ink)}

/* faq */
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 0;min-height:56px;font:700 1.125rem/1.3 var(--f-display);font-stretch:105%;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 1.8rem/1 var(--f-body);color:var(--ink-3);transition:transform .3s var(--ease);flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 22px;max-width:70ch;margin:0}

/* areas */
.areas{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:24px}
.areas h3{font-size:1.2rem;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.areas h3::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--c)}
.areas ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.areas li{border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.9375rem;color:var(--ink);background:var(--card)}
.areas li.base{border-color:var(--ink);font-weight:700}

/* cta band */
.cta{border-radius:18px;padding:clamp(28px,5vw,64px);display:flex;flex-wrap:wrap;gap:24px 40px;align-items:center;justify-content:space-between;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--ramp)}
.cta h2{color:var(--on-night);max-width:20ch}
.cta p{color:var(--on-night-2);margin:.8rem 0 0;max-width:46ch}
.cta .btn--ghost{color:var(--on-night);border-color:var(--on-night)}
.cta .btn--ghost:hover{background:var(--on-night);color:var(--night)}

/* footer */
.site-footer{padding:64px 0 28px;margin-top:0}
.site-footer .cols{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px}
@media (max-width:820px){.site-footer .cols{grid-template-columns:1fr 1fr}.site-footer .cols>:first-child{grid-column:1/-1}}
.site-footer h2{font:700 .8125rem var(--f-display);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:14px}
.site-footer ul{list-style:none;display:grid;gap:2px}
.site-footer a{color:var(--ink);text-decoration:none;display:inline-flex;min-height:36px;align-items:center}
.site-footer a:hover{text-decoration:underline}
.site-footer p{color:var(--ink-2);font-size:.9375rem}
.legal{border-top:1px solid var(--line);margin-top:40px;padding-top:24px;display:grid;gap:12px;font-size:.8125rem;color:var(--ink-3)}
.legal p{font-size:.8125rem;color:var(--ink-3);margin:0;max-width:90ch}
.credit a{color:var(--ink)}
.demo-pill{position:fixed;left:0;bottom:0;z-index:90;background:var(--ink);color:var(--bg);font:700 .5625rem/1.5 var(--f-display);font-stretch:90%;letter-spacing:.12em;text-transform:uppercase;padding:2px 8px;border-radius:0 6px 0 0;opacity:.92;pointer-events:none;white-space:nowrap}
@media (min-width:1280px){.demo-pill{writing-mode:vertical-rl;transform:rotate(180deg);bottom:20px;padding:8px 2px;border-radius:6px 0 0 6px}}
.to-top{position:fixed;right:16px;bottom:16px;z-index:90;width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--ink);box-shadow:var(--shadow);display:grid;place-items:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .3s,transform .3s var(--ease),visibility .3s}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top svg{width:20px;height:20px}

/* reveal */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:calc(var(--d,0) * 80ms)}
.js .rv.in{opacity:1;transform:none}

/* page header (inner pages) */
.phead{padding-block:clamp(36px,5vw,68px) clamp(28px,3.4vw,44px);border-bottom:1px solid var(--line)}
.phead h1{font-size:clamp(2rem,4.6vw,3.6rem);font-stretch:122%;max-width:20ch;margin-bottom:1.2rem}
.phead .lede{margin:0}
.crumbs{margin-bottom:22px}

/* heat flow diagram */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;align-items:stretch}
.flow__n{padding:20px 16px;border:1px solid var(--line);background:var(--card);position:relative;border-radius:0}
.flow__n:first-child{border-radius:14px 0 0 14px}.flow__n:last-child{border-radius:0 14px 14px 0}
.flow__n+.flow__n{border-left:0}
.flow__n svg{width:100%;height:96px;margin-bottom:12px}
.flow__n h3{font-size:1.05rem;margin-bottom:6px}
.flow__n p{font-size:.9rem;margin:0;line-height:1.5}
.flow__arrow{position:absolute;right:-12px;top:44px;z-index:2;width:24px;height:24px;border-radius:50%;background:var(--ink);color:var(--bg);display:grid;place-items:center}
.flow__arrow svg{width:12px;height:12px;margin:0;height:12px}
.chev{animation:slidex 2.2s var(--ease) infinite}
@keyframes slidex{0%{transform:translateX(-14px);opacity:0}30%{opacity:1}100%{transform:translateX(14px);opacity:0}}
@media (max-width:860px){.flow{grid-template-columns:1fr 1fr}.flow__n{border-left:1px solid var(--line)!important;border-radius:0!important;margin:0 0 -1px -1px}.flow__arrow{display:none}}
@media (max-width:520px){.flow{grid-template-columns:1fr}}

/* checklist */
.checks{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:0 40px}
.checks li{display:grid;grid-template-columns:44px 1fr;gap:6px 16px;padding:22px 0;border-top:1px solid var(--line)}
.checks li svg{width:36px;height:36px;color:var(--ink);grid-row:span 2}
.checks h3{font-size:1.1rem}
.checks p{margin:0;font-size:.9875rem}

/* widget demo */
.widget{border:2px dashed var(--line);border-radius:14px;padding:24px;display:grid;gap:8px;background:var(--card)}
.widget .label{color:var(--amber)}

/* forms */
.field{display:grid;gap:6px;margin-bottom:18px;min-width:0}
.field label,.field .lab,legend.lab{font:700 .9375rem var(--f-display);font-stretch:105%;color:var(--ink)}
.field .hint{font-size:.8125rem;color:var(--ink-3);margin:0}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=date],select,textarea{width:100%;min-height:48px;padding:.7rem .9rem;border:1.5px solid var(--ink-3);border-radius:10px;background:var(--card);color:var(--ink);font:400 1rem var(--f-body)}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.field.err input,.field.err select{border-color:var(--bad)}
.err-msg{display:none;color:var(--bad);font-size:.875rem;font-weight:600;margin:0}
.field.err .err-msg{display:block}
fieldset{border:0;padding:0;margin:0 0 20px;min-width:0}
.opts{display:grid;gap:10px}
.opts--2{grid-template-columns:repeat(auto-fit,minmax(min(230px,100%),1fr))}
.opt{position:relative;display:block}
.opt input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.opt span{display:flex;gap:12px;align-items:flex-start;min-height:56px;padding:14px 16px;border:1.5px solid var(--line);background:var(--card);border-radius:12px;color:var(--ink);font-weight:600;line-height:1.35;transition:border-color .2s,background .2s}
.opt span::before{content:"";flex:none;width:20px;height:20px;border-radius:50%;border:2px solid var(--ink-3);margin-top:1px;transition:.2s}
.opt small{display:block;font-weight:400;color:var(--ink-3);font-size:.8125rem;margin-top:2px}
.opt:hover span{border-color:var(--ink-3)}
.opt input:checked+span{border-color:var(--leaf);background:var(--leaf-tint)}
.opt input:checked+span::before{border-color:var(--leaf);background:radial-gradient(circle,var(--leaf) 0 45%,transparent 50%)}
.opt input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}

/* checker */
.checker{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:start}
@media (max-width:900px){.checker{grid-template-columns:1fr}}
.cbox{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}
.prog{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:6px;padding:20px clamp(18px,3vw,32px) 20px}
.prog li{display:grid;gap:8px;font:700 .6875rem var(--f-display);font-stretch:75%;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.prog li::before{content:"";height:5px;border-radius:3px;background:var(--line)}
.prog li.done::before{background:var(--ink)}
.prog li[aria-current="step"]::before{background:var(--ramp)}
.prog li[aria-current="step"]{color:var(--ink)}
.prog li span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:520px){.prog li span{display:none}.prog li[aria-current="step"] span{display:none}}
.cstep{padding:clamp(18px,3vw,32px)}
.cstep h2{font-size:clamp(1.4rem,2.6vw,1.9rem);margin-bottom:8px}
.cstep .hint{margin:0 0 22px;color:var(--ink-3);font-size:.9375rem}
.cnav{display:flex;justify-content:space-between;gap:12px;margin-top:24px;flex-wrap:wrap}
.cstep:focus{outline:none}
.res{padding:0}
.res__head{padding:clamp(22px,3vw,36px);color:var(--ink);position:relative;overflow:hidden;color:#fff}
.res__head h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.6rem)}
.res__head .label{color:rgba(255,255,255,.85);margin-bottom:10px;display:block}
.res--yes .res__head{background:linear-gradient(105deg,#5B1A8C 0%,#B4237E 28%,#E8492E 52%,#F79A1D 80%,#C98A00 100%)}
.res--maybe .res__head{background:linear-gradient(105deg,#1A0B3B 0%,#5B1A8C 38%,#B4237E 78%,#A5410F 100%)}
.res--no .res__head{background:linear-gradient(105deg,#0E0C16 0%,#1A0B3B 55%,#3A1670 100%)}
.res__head::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(14,12,22,.55),transparent 70%);pointer-events:none}
.res__head>*{position:relative;z-index:1}
.res__body{padding:clamp(18px,3vw,32px);display:grid;gap:24px}
.reasons{list-style:none;display:grid;gap:10px}
.reasons li{display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:start;color:var(--ink);font-size:.9875rem;line-height:1.5}
.reasons li svg{width:24px;height:24px;margin-top:1px}
.reasons .ok svg{color:var(--leaf-text)}.reasons .no svg{color:var(--bad)}.reasons .chk svg{color:var(--amber)}
.money{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.money div{border:1px solid var(--line);border-radius:12px;padding:16px}
.money b{display:block;font:800 1.6rem/1.1 var(--f-display);font-stretch:112%;font-variant-numeric:tabular-nums;color:var(--ink);margin:6px 0 2px}
.money small{color:var(--ink-3);font-size:.8125rem}
.aside-card h2{font-size:1.25rem;margin-bottom:12px}
.aside-card ul{list-style:none;display:grid;gap:12px;margin:0 0 18px}
.aside-card li{display:grid;grid-template-columns:22px 1fr;gap:10px;font-size:.9375rem;color:var(--ink-2);line-height:1.5}
.aside-card li svg{width:20px;height:20px;color:var(--leaf-text);margin-top:2px}

/* sizer */
.sizer{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(20px,3vw,40px);align-items:start}
@media (max-width:960px){.sizer{grid-template-columns:1fr}}
.dial{position:relative;width:min(100%,320px);aspect-ratio:1;margin:8px auto 4px}
.dial svg{position:absolute;inset:0;width:100%;height:100%}
.dial__pt{position:absolute;width:88px;transform:translate(-50%,-50%)}
.dial__pt span{min-height:44px;padding:8px 6px;justify-content:center;text-align:center;font:700 .8125rem/1.15 var(--f-display);font-stretch:95%;flex-direction:column;align-items:center;gap:2px;background:var(--card)}
.dial__pt span::before{display:none}
.dial__pt small{font-size:.6875rem}
.needle{transform-origin:160px 160px;transition:transform .7s var(--ease)}
.stepper{display:flex;align-items:center;gap:0;border:1.5px solid var(--ink-3);border-radius:12px;width:fit-content;background:var(--card);overflow:hidden}
.stepper button{width:56px;height:52px;border:0;background:transparent;color:var(--ink);font:700 1.5rem var(--f-display);cursor:pointer}
.stepper button:hover{background:var(--bg-2)}
.stepper input{width:72px;min-height:52px;text-align:center;border:0;border-inline:1.5px solid var(--line);border-radius:0;font:800 1.4rem var(--f-display);font-variant-numeric:tabular-nums;background:transparent;-moz-appearance:textfield;appearance:textfield}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.result{position:sticky;top:90px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:clamp(18px,2.6vw,28px);box-shadow:var(--shadow)}
@media (max-width:960px){.result{position:static}}
.roofplan{background:var(--bg-2);border-radius:12px;padding:14px;margin-bottom:18px}
.roofplan svg{width:100%;height:auto}
.panelc{fill:var(--panel);stroke:var(--panel-2);stroke-width:1;transition:opacity .25s,transform .35s var(--ease);transform-box:fill-box;transform-origin:center}
.panelc.off{opacity:.1;transform:scale(.85)}
.kpis{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:16px}
.kpi{border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.kpi b{display:block;font:800 clamp(1.05rem,1.7vw,1.25rem)/1.2 var(--f-display);font-stretch:110%;font-variant-numeric:tabular-nums;color:var(--ink);margin-top:6px}
.kpi small{display:block;color:var(--ink-3);font-size:.8125rem;margin-top:4px}
.kpi--wide{grid-column:1/-1}
.months{display:flex;align-items:flex-end;gap:5px;height:110px;margin-top:10px}
.months i{flex:1;border-radius:3px 3px 0 0;background:linear-gradient(0deg,#5B1A8C,#B4237E 25%,#E8492E 50%,#F79A1D 72%,#FCE36A);background-size:100% 110px;background-position:bottom;transform-origin:bottom;transition:height .6s var(--ease);min-width:0}
.months-l{display:flex;gap:5px;margin-top:6px}
.months-l span{flex:1;text-align:center;font:700 .625rem var(--f-display);font-stretch:80%;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase}
.sumline{font-size:.9875rem;color:var(--ink);margin:0 0 14px;line-height:1.5}

/* survey */
.survey{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:start}
@media (max-width:900px){.survey{grid-template-columns:1fr}}
.slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:8px}
.slot{position:relative}
.slot input{position:absolute;inset:0;opacity:0;margin:0;width:100%;height:100%;cursor:pointer}
.slot span{display:grid;place-items:center;text-align:center;min-height:64px;padding:8px;border:1.5px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:700 .9375rem/1.2 var(--f-display);font-stretch:100%}
.slot small{display:block;font:500 .75rem var(--f-body);color:var(--ink-3)}
.slot input:checked+span{border-color:var(--leaf);background:var(--leaf-tint)}
.slot input:focus-visible+span{outline:3px solid var(--focus);outline-offset:2px}
.slot input:disabled+span{opacity:.45;text-decoration:line-through}
.times{display:flex;gap:10px;flex-wrap:wrap}
.success{padding:clamp(22px,3vw,36px);border-radius:18px;border:1px solid var(--leaf);background:var(--leaf-tint)}
.success h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:10px}
.success dl{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin:18px 0 0;font-size:.9875rem}
.success dt{color:var(--ink-3)}.success dd{margin:0;color:var(--ink);font-weight:600}
.timeline{list-style:none;display:grid;gap:0;margin:0}
.timeline li{display:grid;grid-template-columns:104px 1fr;gap:14px;padding:14px 0;border-top:1px solid var(--line)}
.timeline b{font:800 .875rem var(--f-display);font-stretch:90%;color:var(--ink);letter-spacing:.06em;text-transform:uppercase;font-variant-numeric:tabular-nums}
.timeline span{color:var(--ink-2);font-size:.9875rem}

.prose{max-width:72ch}
.prose h2{font-size:1.5rem;margin:2.2rem 0 .7rem;font-stretch:108%}
.prose li{color:var(--ink-2);margin-bottom:.4rem}
.prose ul{padding-left:1.2rem;margin-bottom:1rem}

@media (max-width:860px){
  .scene__grid{grid-template-columns:1fr;align-content:start;gap:14px}
  .scene__copy{gap:.8rem}
  .scene__copy .lede{font-size:.98rem}
  .scene__fig{gap:10px}
  .js .scene{height:240dvh}
  .scene__stage{padding-block:14px}
  .scene__copy h1{font-size:clamp(1.9rem,9vw,2.6rem)}
  .scrollhint{display:none}
  .caps{min-height:4em}
  .scene__stage{padding-bottom:52px}
  .scene__copy .label{display:none}
  .scene__ctas .btn{padding:.7rem 1rem;font-size:.9375rem}
  .hud{left:10%;top:8px;right:10%}
  .hud .label{font-size:.625rem}
  .scale i{width:72px}
}
@media (max-width:860px) and (max-height:760px){.scene__copy .lede{display:none}}
@media (min-width:861px) and (max-height:760px){.scene__copy h1{font-size:clamp(2rem,4.4vw,3.4rem)}.scene__copy .lede{font-size:1rem}}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .rv{opacity:1;transform:none}
  .js .hl li{transform:none}
  .js .scene{height:auto}
  .js .scene__stage{position:relative;top:0;height:auto;min-height:0}
  .scrollhint{display:none}
  .unit{transform:none}
}
@media print{.to-top,.demo-pill,.site-header,.scene__stage::before{display:none!important}}
.hl-key svg,.link-arrow svg{width:18px;height:18px;flex:none}
.hl-key svg{color:var(--leaf-text);transform:translateY(3px)}
.opt span span{display:block;min-height:0;padding:0;border:0;background:none;gap:0;transition:none}
.opt span span::before{content:none;display:none}