/* Copperline S301 — exact dark/brass reference language, rebranded for a Stoke demo.
   The page keeps the competitor's sequence and geometry while the Copperline mark, fixed-price
   ledger, heat-trace reveal and honest preview states make it a first-party Neubor demo. */
:root {
  --black: #080808;
  --black-2: #10100f;
  --black-3: #171612;
  --paper: #f7f5f0;
  --paper-2: #ece9e1;
  --brass: #e3d27d;
  --brass-hot: #f3e49a;
  --copper: #ef7f45;
  --ink: #171713;
  --muted: #aaa79b;
  --line: rgba(255,255,255,.16);
  --paper-line: rgba(23,23,19,.16);
  --display: "Urbanist", "Segoe UI", sans-serif;
  --body: "Raleway", "Segoe UI", sans-serif;
  --wrap: 1320px;
  --shadow: 0 26px 70px rgba(0,0,0,.22);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--black); color: #f6f3ea; font: 500 1rem/1.65 var(--body); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
body::selection { background: var(--brass); color: var(--black); }
h1,h2,h3 { font-family: var(--display); line-height: 1.03; letter-spacing: -.035em; }
h1,h2,h3,p { text-wrap: pretty; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button,input,select,textarea { font: inherit; }
ul { list-style: none; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; z-index: 100; top: -4rem; left: 1rem; padding: .65rem 1rem; background: var(--brass); color: var(--black); font-weight: 800; text-decoration: none; }
.skip-link:focus { top: 0; }
:focus-visible { outline: 2px solid var(--brass-hot); outline-offset: 4px; }
.shell { width: min(var(--wrap), calc(100% - 3rem)); margin-inline: auto; }
.eyebrow { color: var(--brass); font-size: .72rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.section-kicker { display: flex; align-items: center; gap: .8rem; color: var(--brass); font-size: .72rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.section-kicker::before { content: ""; width: 34px; height: 1px; background: currentColor; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3.1rem; padding: .85rem 1.35rem; border: 1px solid var(--brass); background: var(--brass); color: var(--black); font-weight: 800; letter-spacing: .01em; text-decoration: none; transition: background .25s ease, color .25s ease, transform .25s ease, box-shadow .25s ease; }
.button:hover { background: var(--brass-hot); transform: translateY(-2px); box-shadow: 0 13px 30px rgba(227,210,125,.18); }
.button-ghost { border-color: rgba(255,255,255,.5); background: transparent; color: #fff; }
.button-ghost:hover { border-color: var(--brass); background: transparent; color: var(--brass); }
.button-small { min-height: 2.35rem; padding: .5rem .85rem; font-size: .82rem; }
.button-light { background: #fff; border-color: #fff; color: var(--black); }
.button-light:hover { background: var(--brass); border-color: var(--brass); }

/* One-shot loading curtain. It is deliberately short and settles before the first content frame. */
.cl-loader { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; background: var(--black); color: var(--brass); transition: opacity .55s ease, visibility .55s ease; }
.cl-loader.is-lifted { opacity: 0; visibility: hidden; pointer-events: none; }
.cl-loader-inner { display: grid; justify-items: center; gap: 1rem; }
.cl-loader-mark { width: 74px; height: 74px; animation: loader-pulse 1.25s ease-in-out both; }
.cl-loader-line { width: 132px; height: 2px; overflow: hidden; background: rgba(227,210,125,.2); }
.cl-loader-line::after { content: ""; display: block; width: 45%; height: 100%; background: var(--brass); transform: translateX(-110%); animation: loader-line 1.1s ease-out .12s both; }
.cl-loader-label { font-size: .66rem; font-weight: 800; letter-spacing: .24em; text-transform: uppercase; }
@keyframes loader-pulse { 0% { opacity: 0; transform: scale(.78) rotate(-8deg); } 55% { opacity: 1; transform: scale(1) rotate(0); } 100% { transform: scale(1.03); } }
@keyframes loader-line { to { transform: translateX(330%); } }

/* Utility strip + header mirror the reference's stacked chrome. */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .58rem max(1.5rem, calc((100% - var(--wrap))/2)); background: var(--black-2); color: var(--brass-hot); border-bottom: 1px solid rgba(227,210,125,.18); font-size: .74rem; font-weight: 800; letter-spacing: .03em; }
.topbar-trust { display: flex; align-items: center; gap: .7rem; }
.topbar-motto { color: #fff; font-weight: 500; }
.topbar-contact { display: flex; align-items: center; gap: 1rem; }
.topbar a { color: inherit; text-decoration: none; }
.topbar .button-small { color: var(--black); }
.site-header { position: sticky; top: 0; z-index: 40; display: grid; grid-template-columns: auto minmax(0,1fr) auto auto; align-items: center; gap: 1.2rem; padding: 1.05rem max(1.5rem, calc((100% - var(--wrap))/2)); border-bottom: 1px solid rgba(255,255,255,.13); background: rgba(8,8,8,.92); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: .75rem; min-width: max-content; text-decoration: none; }
.brand-mark { width: 46px; height: 46px; flex: 0 0 auto; }
.brand-lockup { display: grid; line-height: .95; }
.brand-name { color: #fff; font: 800 1.35rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; }
.brand-sub { margin-top: .28rem; color: var(--brass); font-size: .53rem; font-weight: 800; letter-spacing: .18em; }
.nav-disclosure { justify-self: center; }
.nav-disclosure summary { display: none; list-style: none; cursor: pointer; }
.nav-disclosure summary::-webkit-details-marker { display: none; }
.nav-disclosure nav { display: flex; align-items: center; justify-content: center; gap: clamp(.35rem, 1vw, 1rem); }
.nav-disclosure nav a:not(.button) { position: relative; padding: .5rem .25rem; color: #d5d1c6; font-size: .79rem; font-weight: 700; text-decoration: none; }
.nav-disclosure nav a:not(.button)::after { content: ""; position: absolute; right: .25rem; bottom: .18rem; left: .25rem; height: 1px; background: var(--brass); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.nav-disclosure nav a:not(.button):hover::after, .nav-disclosure nav a[aria-current="page"]::after { transform: scaleX(1); }
.header-call { color: var(--brass); font-size: .82rem; font-weight: 800; text-align: right; text-decoration: none; white-space: nowrap; }
.header-cues { display:flex; align-items:center; gap:.45rem; justify-self:end; }
.header-cues span { display:grid; gap:.14rem; padding:.35rem .5rem; border-left:1px solid rgba(227,210,125,.45); }
.header-cues b { color:var(--brass-hot); font-size:.57rem; letter-spacing:.12em; line-height:1; }
.header-cues small { color:#aaa79b; font-size:.44rem; letter-spacing:.08em; text-transform:uppercase; }
.gas-safe-triangle { display:grid!important; place-items:center; align-content:center; width:4.5rem; height:3.65rem; padding:.35rem!important; border:0!important; background:var(--brass-hot); color:var(--black); clip-path:polygon(50% 0,100% 100%,0 100%); line-height:.82; text-align:center; }
.gas-safe-triangle b { color:var(--black); font-size:.42rem; letter-spacing:0; line-height:1; }
.gas-safe-triangle strong { color:var(--black); font:900 .85rem/1 var(--display); letter-spacing:-.06em; }
.gas-safe-triangle small { color:var(--black); font-size:.35rem; font-weight:900; letter-spacing:.08em; }

/* Competitor-like hero: large type on black, a full-height installation plate, then proof rails. */
.hero { position: relative; isolation: isolate; overflow: hidden; background: var(--black); }
.hero::before { position: absolute; inset: 15% auto auto -7%; z-index: -1; width: 42rem; height: 42rem; border: 1px solid rgba(227,210,125,.14); border-radius: 50%; content: ""; }
.hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(480px, 1.1fr); min-height: min(770px, calc(100vh - 116px)); }
.hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(4rem, 8vw, 8.2rem) clamp(1.5rem, 4vw, 5rem) clamp(4rem, 8vw, 7rem) max(1.5rem, calc((100vw - var(--wrap))/2)); }
.hero h1 { max-width: 12ch; margin-top: 1rem; font-size: clamp(3.1rem, 5.25vw, 5.9rem); font-weight: 500; }
.hero h1 .accent { color: var(--brass); }
.hero-lede { max-width: 39rem; margin-top: 1.45rem; color: #c3beb1; font-size: clamp(1rem, 1.2vw, 1.18rem); }
.hero-points { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem 1.35rem; max-width: 35rem; margin-top: 1.7rem; color: #e8e4da; font-size: .87rem; }
.hero-points li { position: relative; padding-left: 1.25rem; }
.hero-points li::before { position: absolute; top: .02rem; left: 0; color: #45d875; content: "›"; font-size: 1.55rem; font-weight: 500; line-height: 1; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero-foot { display: flex; align-items: center; gap: 1rem; margin-top: 2rem; color: #a9a497; font-size: .76rem; }
.safe-seal { display: grid; place-items: center; width: 64px; height: 64px; border: 1px solid var(--brass); border-radius: 50%; color: var(--brass); font-size: .52rem; font-weight: 900; letter-spacing: .08em; line-height: 1.15; text-align: center; }
.hero-visual { position: relative; min-height: 650px; overflow: hidden; }
.hero-visual::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,8,8,.2), transparent 35%), linear-gradient(0deg, rgba(8,8,8,.44), transparent 35%); content: ""; pointer-events: none; }
.hero-visual img { width: 100%; height: 100%; min-height: 650px; object-fit: cover; object-position: 100% center; filter: saturate(.88) contrast(1.06); transform: scale(1.04); transition: transform 1.3s cubic-bezier(.2,.7,.2,1); }
.hero-visual.is-in img { transform: scale(1); }
.hero-stamp { position: absolute; right: 6%; bottom: 12%; z-index: 8; display: grid; place-items: center; width: 164px; height: 164px; padding: 1rem; border: 1px solid var(--brass); border-radius: 50%; background: rgba(8,8,8,.9); color: var(--brass); font-size: .68rem; font-weight: 800; letter-spacing: .08em; line-height: 1.25; text-align: center; transform: rotate(-8deg); }
.hero-stamp { font-size:0; color:transparent; }
.hero-stamp strong { display:none; }
.hero-stamp::before { content:"10"; display:block; color:#fff; font:800 2.8rem/1 var(--display); letter-spacing:-.05em; }
.hero-stamp::after { content:"YEARS\A WARRANTY CUE\A PREVIEW"; display:block; margin-top:.25rem; color:var(--brass); font-size:.54rem; font-weight:900; letter-spacing:.08em; line-height:1.25; white-space:pre; }
.hero-brandrail { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem; margin-top: 2rem; color: #b4afa2; font-size: .78rem; }
.brand-word { color: #e2ded4; font: 800 1rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase; }
.brand-word small { display: block; margin-top: .18rem; color: #817b6d; font: 500 .46rem/1 var(--body); letter-spacing: .08em; }

.proof-rail { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--black-2); }
.proof-item { min-height: 9rem; padding: 1.8rem clamp(1rem, 2vw, 2rem); border-right: 1px solid var(--line); }
.proof-item:last-child { border-right: 0; }
.proof-icon { color: var(--brass); font-size: 1.6rem; }
.proof-item h2 { margin-top: .7rem; color: #fff; font-size: 1rem; letter-spacing: .01em; }
.proof-item p { margin-top: .35rem; color: #9d998e; font-size: .77rem; }

.dark-section { padding: clamp(5rem, 9vw, 9rem) 0; background: var(--black); }
.dark-split { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(2rem, 7vw, 9rem); align-items: center; }
.dark-split h2, .dark-section h2 { max-width: 11ch; margin-top: 1rem; color: #fff; font-size: clamp(2.4rem, 4.6vw, 5.15rem); font-weight: 500; }
.dark-split p { max-width: 42rem; margin-top: 1.2rem; color: #bbb6a9; }
.dark-split .body-copy p + p { margin-top: 1rem; }
.route-graphic { position: relative; min-height: 350px; padding: 1.2rem 1.2rem 3.7rem; border: 1px solid var(--line); background: linear-gradient(145deg, #151515, #080808 68%); overflow: hidden; }
.route-graphic::before { position: absolute; inset: 0; background: linear-gradient(115deg, transparent 0 48%, rgba(227,210,125,.08) 48.2%, transparent 48.6%), radial-gradient(circle at 82% 18%, rgba(227,210,125,.12), transparent 28%); content: ""; pointer-events: none; }
.route-map { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .75rem; align-items: stretch; min-height: 235px; margin-top: 2.4rem; }
.route-map::before { position: absolute; top: 50%; right: 7%; left: 7%; height: 1px; background: linear-gradient(90deg, rgba(227,210,125,.2), var(--brass), rgba(227,210,125,.2)); content: ""; }
.route-node { position: relative; z-index: 1; display: grid; align-content: center; gap: .42rem; min-height: 128px; padding: 1rem .85rem; border: 1px solid rgba(227,210,125,.28); background: rgba(8,8,8,.88); }
.route-node::after { position: absolute; top: 50%; right: -.48rem; width: .48rem; height: 1px; background: var(--brass); content: ""; }
.route-node:last-child::after { display: none; }
.route-node span { color: var(--brass); font-size: .62rem; font-weight: 900; letter-spacing: .18em; }
.route-node strong { color: #fff; font: 600 clamp(1.15rem, 1.6vw, 1.55rem)/1 var(--display); letter-spacing: -.02em; }
.route-node small { color: #aaa596; font-size: .68rem; line-height: 1.35; }
.route-node--final { border-color: var(--brass); background: linear-gradient(145deg, rgba(227,210,125,.14), rgba(8,8,8,.94)); }
.route-diagram { position: relative; z-index: 1; display: block; width: 100%; height: auto; }
.route-grid { fill: none; stroke: rgba(227,210,125,.09); stroke-width: 1; }
.route-track { fill: none; stroke: rgba(227,210,125,.35); stroke-linecap: round; stroke-linejoin: round; stroke-width: 6; }
.route-track--hot { stroke: url(#route-brass); stroke-dasharray: 7 15; stroke-width: 2; animation: route-flow 2.8s linear infinite; }
.route-point { fill: var(--black); stroke: #e3d27d; stroke-width: 3; }
.route-arrow { fill: none; stroke: #e3d27d; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; }
.route-steps { position: absolute; right: 1.2rem; bottom: 1.15rem; left: 1.2rem; z-index: 1; display: flex; justify-content: space-between; gap: .5rem; color: #aaa596; font-size: .65rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.route-steps span { display: flex; align-items: center; gap: .35rem; }
.route-steps b { color: var(--brass); font-size: .55rem; }
.route-label { position: absolute; top: 1rem; right: 1.2rem; z-index: 1; color: var(--brass); font-size: .65rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
@keyframes route-flow { to { stroke-dashoffset: -44; } }

.paper-section { padding: clamp(5rem, 8vw, 8rem) 0; background: var(--paper); color: var(--ink); }
.paper-section h2 { max-width: 12ch; margin-top: .8rem; font-size: clamp(2.4rem, 4.5vw, 5rem); font-weight: 600; }
.paper-section .section-kicker { color: #9e7e18; }
.section-intro { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 3rem; }
.section-intro > p { max-width: 34rem; color: #656257; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.why-card { position: relative; min-height: 26rem; overflow: hidden; background: #222; }
.why-card img { width: 100%; height: 100%; min-height: 26rem; object-fit: cover; filter: saturate(.76); transition: transform .7s cubic-bezier(.2,.7,.2,1), filter .7s ease; }
.why-card:hover img { transform: scale(1.07); filter: saturate(1); }
.why-card::after { position: absolute; inset: 38% 0 0; background: linear-gradient(0deg, rgba(8,8,8,.9), transparent); content: ""; }
.why-card-copy { position: absolute; right: 1.4rem; bottom: 1.35rem; left: 1.4rem; z-index: 1; color: #fff; }
.why-card-copy span { color: var(--brass); font-size: .7rem; font-weight: 800; letter-spacing: .14em; }
.why-card-copy h3 { margin-top: .45rem; font-size: 1.55rem; font-weight: 600; }
.why-card-copy p { margin-top: .4rem; color: #d4d0c6; font-size: .82rem; }
.rated-strip { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1rem; padding: 1rem 1.2rem; border: 1px solid var(--paper-line); background: #fff; color: #4c4a42; }
.stars { color: #9e7e18; letter-spacing: .14em; }
.rated-strip small { font-size: .72rem; }

.expectation { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; margin-top: clamp(5rem, 9vw, 8rem); background: var(--paper-2); }
.expectation img { width: 100%; height: 100%; min-height: 430px; object-fit: cover; }
.expectation-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(2rem, 6vw, 6rem); }
.expectation-copy h3 { margin-top: .8rem; font-size: clamp(2rem, 3.3vw, 3.6rem); font-weight: 600; }
.expectation-copy p { margin-top: 1rem; color: #5f5c53; }
.check-list { display: grid; gap: .8rem; margin-top: 1.4rem; color: #30302b; }
.check-list li { padding-left: 1.5rem; position: relative; font-size: .9rem; }
.check-list li::before { position: absolute; top: .48rem; left: 0; width: 8px; height: 8px; background: var(--brass); content: ""; }

.price-ledger { background: var(--black-2); color: #fff; }
.price-ledger h2 { color: #fff; }
.ledger { margin-top: 3rem; border-top: 1px solid var(--line); }
.ledger-row { display: grid; grid-template-columns: minmax(0, 1fr) 5rem 8rem; gap: 1rem; align-items: center; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.ledger-row[hidden] { display: none; }
.ledger-row h3 { font-size: 1.05rem; font-weight: 600; letter-spacing: 0; }
.ledger-row p { color: #9a9588; font-size: .8rem; }
.ledger-price { color: var(--brass); font: 700 1.1rem var(--display); text-align: right; }
.ledger-time { color: #817d71; font-size: .72rem; text-align: right; }
.ledger-link { margin-top: 2rem; }

.brand-band { position: relative; overflow: hidden; padding: 4rem 0; background: linear-gradient(105deg, #16140e, #080808); }
.brand-band::before { position: absolute; top: -7rem; right: 9%; width: 22rem; height: 22rem; border: 1px solid rgba(227,210,125,.18); border-radius: 50%; content: ""; }
.brand-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; margin-top: 2rem; }
.brand-card { padding: 1.5rem 1.2rem; border: 1px solid var(--line); color: #e8e3d8; text-align: center; }
.brand-card strong { display: block; font: 800 1.1rem var(--display); letter-spacing: .08em; text-transform: uppercase; }
.brand-card small { display: block; margin-top: .4rem; color: #8b8679; font-size: .67rem; }

.review-section { background: var(--black); }
.review-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin-top: 3rem; background: var(--line); }
.review-card { min-height: 245px; padding: 1.5rem; background: var(--black-2); }
.review-card .stars { font-size: .85rem; }
.review-card blockquote { margin-top: 1.15rem; color: #e6e1d6; font-family: var(--display); font-size: 1.2rem; line-height: 1.25; }
.review-card cite { display: block; margin-top: 1.5rem; color: #8e897d; font-size: .74rem; font-style: normal; }

.service-pills { background: var(--paper); color: var(--ink); }
.pill-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: .75rem; margin-top: 2.5rem; }
.pill-grid a { display: flex; align-items: center; justify-content: space-between; min-height: 4.25rem; padding: .9rem 1.15rem; border: 1px solid var(--paper-line); border-radius: 99px; color: var(--ink); font-weight: 700; text-decoration: none; transition: background .2s ease, color .2s ease, transform .2s ease; }
.pill-grid a::after { color: #9e7e18; content: "↗"; font-size: 1.25rem; }
.pill-grid a:hover { background: var(--black); color: #fff; transform: translateY(-2px); }

.advice { background: var(--black-3); }
.advice-panel { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 2rem; padding: clamp(2rem, 5vw, 5rem); border: 1px solid var(--line); background: radial-gradient(circle at 85% 20%, rgba(227,210,125,.15), transparent 30%), var(--black); }
.advice-panel h2 { max-width: 10ch; }
.advice-panel p { max-width: 37rem; margin-top: 1rem; color: #b4afa1; }

.faq-quote { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(2rem, 7vw, 8rem); }
.faq-list { margin-top: 2.3rem; border-top: 1px solid var(--paper-line); }
.faq-list details { padding: 1.1rem 0; border-bottom: 1px solid var(--paper-line); }
.faq-list summary { cursor: pointer; color: var(--ink); font-family: var(--display); font-size: 1.04rem; font-weight: 700; }
.faq-list p { padding: .8rem 1.5rem 0 0; color: #666259; font-size: .87rem; }
.quote-card { padding: clamp(1.5rem, 3vw, 2.8rem); background: #fff; box-shadow: var(--shadow); }
.quote-card h2 { max-width: 10ch; font-size: clamp(2rem, 3.2vw, 3.5rem); }
.quote-card > p { margin-top: .8rem; color: #666259; font-size: .85rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .85rem; margin-top: 1.4rem; }
.field { display: grid; gap: .34rem; }
.field-wide { grid-column: 1/-1; }
.field label { color: #555147; font-size: .7rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.field input,.field select,.field textarea { width: 100%; min-height: 3rem; padding: .7rem .8rem; border: 1px solid #cac7bf; border-radius: 2px; background: #f4f3ef; color: var(--ink); }
.field textarea { min-height: 6rem; resize: vertical; }
.quote-card .button { width: 100%; margin-top: 1rem; }
.form-status { min-height: 1.4em; margin-top: .7rem; color: #756114; font-size: .75rem; }

footer { position: relative; overflow: hidden; padding: 4.5rem 0 1.4rem; background: #050505; border-top: 1px solid rgba(227,210,125,.24); }
footer::before { position: absolute; right: -12rem; bottom: -16rem; width: 35rem; height: 35rem; border: 1px solid rgba(227,210,125,.16); border-radius: 50%; content: ""; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; }
.footer-grid h2 { margin-bottom: .8rem; color: #fff; font-size: 1rem; letter-spacing: .01em; }
.footer-grid p,.footer-grid a { color: #969184; font-size: .78rem; }
.footer-grid p { max-width: 25rem; }
.footer-grid a { display: block; margin-top: .4rem; text-decoration: none; }
.footer-grid a:hover { color: var(--brass); }
.footer-brand-copy { margin-top: 1rem; }
.footer-line { position: relative; height: 1px; margin: 3rem 0 1rem; overflow: hidden; background: var(--line); }
.footer-line::after { position: absolute; inset: 0 auto 0 0; width: 28%; background: linear-gradient(90deg, var(--brass), var(--copper)); content: ""; transform: translateX(-110%); }
footer.is-in .footer-line::after { animation: heat-trace 1.2s .2s cubic-bezier(.2,.7,.2,1) forwards; }
@keyframes heat-trace { to { transform: translateX(360%); } }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; color: #777267; font-size: .7rem; }
.neubor-credit { color: var(--brass) !important; font-weight: 800; }
.cursor-glow { position: fixed; z-index: 2; width: 360px; height: 360px; margin: -180px 0 0 -180px; pointer-events: none; border-radius: 50%; background: radial-gradient(circle, rgba(227,210,125,.12), transparent 65%); opacity: 0; mix-blend-mode: screen; transition: opacity .3s ease; }
body.has-glow .cursor-glow { opacity: 1; }
.reveal,[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.is-in,[data-reveal].is-in { opacity: 1; transform: none; }
.reveal-stagger > * { opacity: 0; transform: translateY(18px); transition: opacity .55s ease, transform .55s ease; }
.reveal-stagger.is-in > * { opacity: 1; transform: none; }
.reveal-stagger.is-in > *:nth-child(2) { transition-delay: .08s; }.reveal-stagger.is-in > *:nth-child(3) { transition-delay: .16s; }.reveal-stagger.is-in > *:nth-child(4) { transition-delay: .24s; }

@media (max-width: 1080px) {
  .site-header { grid-template-columns: auto auto; }.nav-disclosure { justify-self: end; }.header-call,.header-cues { display: none; }
  .nav-disclosure summary { display: inline-flex; padding: .55rem .8rem; border: 1px solid var(--brass); color: var(--brass); font-size: .75rem; font-weight: 800; text-transform: uppercase; }
  .nav-disclosure[open] nav { display: grid; position: absolute; top: calc(100% + 1px); right: 1.5rem; left: 1.5rem; padding: 1rem; border: 1px solid var(--line); background: rgba(8,8,8,.98); box-shadow: var(--shadow); }
  .nav-disclosure[open] nav a:not(.button) { padding: .75rem; }.nav-disclosure nav { display: none; }
  .hero-grid { grid-template-columns: 1fr 1fr; }.hero-copy { padding-left: 1.5rem; }.hero h1 { font-size: clamp(3rem, 5vw, 4.8rem); }
}
@media (max-width: 800px) {
  .topbar { align-items: center; flex-direction: row; flex-wrap: nowrap; padding: .55rem 1rem; }.topbar-trust { min-width: 0; flex: 1 1 auto; }.topbar-trust > span:first-child { flex: 1 1 auto; min-width: 0; max-width: calc(100% - 7rem); overflow-wrap: anywhere; line-height: 1.2; white-space: normal; }.topbar-motto,.topbar-contact > a:first-child { display: none; }.topbar-contact { width: auto; flex: 0 0 auto; justify-content: flex-end; }.topbar-contact .button-small { min-height: 2.2rem; padding: .5rem .7rem; font-size: .62rem; }
  .shell { width: min(var(--wrap), calc(100% - 2rem)); }.hero-grid,.dark-split,.expectation,.faq-quote { grid-template-columns: 1fr; }.hero-copy { order: 1; padding: 3.4rem 1rem 2.8rem; }.hero-visual,.hero-visual img { min-height: 480px; }.hero-visual { order: 2; }.hero-stamp { right: 6%; bottom: 7%; width: 112px; height: 112px; }
  /* Mobile first-fold repair: keep Copperline's real installation plate behind the opening copy
     instead of pushing every useful image below the fold. The copy stays on a dark scrim, and the
     image remains the actual route asset so service, about and booking pages do not become text-only. */
  .hero:has(.hero-visual img) .hero-grid { position: relative; display: block; min-height: clamp(34rem, 86vh, 44rem); }
  .hero:has(.hero-visual img) .hero-copy { position: relative; z-index: 1; min-height: clamp(34rem, 86vh, 44rem); padding: 3.4rem 1rem 2.8rem; background: linear-gradient(90deg, rgba(8,8,8,.96) 0%, rgba(8,8,8,.86) 56%, rgba(8,8,8,.52) 100%); }
  .hero:has(.hero-visual img) .hero-visual { position: absolute; inset: 0; z-index: 0; display: block; min-height: 0; }
  .hero:has(.hero-visual img) .hero-visual img { width: 100%; height: 100%; min-height: 0; object-fit: cover; object-position: center; transform: none; }
  .hero:has(.hero-visual img) .hero-visual::after { inset: 0; background: linear-gradient(90deg, rgba(8,8,8,.42), rgba(8,8,8,.08) 72%), linear-gradient(0deg, rgba(8,8,8,.54), transparent 52%); content: ""; }
  .proof-rail { grid-template-columns: repeat(2,1fr); }.proof-item:nth-child(2) { border-right: 0; }.proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .why-grid,.review-grid,.brand-list,.pill-grid { grid-template-columns: 1fr 1fr; }.section-intro { align-items: flex-start; flex-direction: column; }.expectation-copy { padding: 3rem 1.4rem; }.expectation img { min-height: 310px; }
  .advice-panel { grid-template-columns: 1fr; }.footer-grid { grid-template-columns: 1fr 1fr; }.footer-bottom { flex-direction: column; }
}
@media (max-width: 520px) {
  .brand-mark { width: 38px; height: 38px; }.brand-name { font-size: 1.05rem; }.brand-sub { font-size: .42rem; }.site-header { padding-inline: 1rem; gap: .7rem; }
  .hero h1 { font-size: clamp(2.8rem, 13vw, 4rem); }.hero-points { grid-template-columns: 1fr; }.hero-actions { flex-direction: column; align-items: stretch; margin-bottom: 4.25rem; }.hero-actions .button { width: 100%; }.hero-foot,.hero-brandrail { display:none; }
  .proof-rail,.why-grid,.review-grid,.brand-list,.pill-grid,.footer-grid,.form-grid { grid-template-columns: 1fr; }.proof-item { border-right: 0; border-bottom: 1px solid var(--line); }.proof-item:last-child { border-bottom: 0; }.why-card { min-height: 20rem; }.why-card img { min-height: 20rem; }.ledger-row { grid-template-columns: 1fr auto; }.ledger-time { grid-column: 1/-1; text-align: left; }.ledger-price { grid-row: 1; grid-column: 2; }.footer-grid { gap: 1.5rem; }
}
@media (max-width: 720px) {
  .route-map { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem; min-height: 0; }
  .route-map::before, .route-node::after { display: none; }
  .route-node { min-height: 104px; padding: .85rem .7rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }.cl-loader,.cl-loader *, .reveal,.reveal-stagger > *,img,.button,.route-track--hot { animation: none !important; transition: none !important; }.cl-loader { opacity: 0; visibility: hidden; }.reveal,[data-reveal],.reveal-stagger > * { opacity: 1 !important; transform: none !important; }.cursor-glow { display: none; }
}

/* Accessibility palette hooks — retain Copperline's dark/brass grammar with explicit fallbacks. */
html[data-a11y-contrast="high"] {
  --black: #000; --black-2: #000; --black-3: #000;
  --paper: #fff; --paper-2: #fff; --brass: #fff; --brass-hot: #fff; --copper: #fff;
  --ink: #000; --muted: #fff; --line: #fff; --paper-line: #000;
}
html[data-a11y-colour="safe"] {
  --black: #23282a; --black-2: #16191a; --black-3: #3a4245;
  --brass: #e69f00; --brass-hot: #e69f00; --copper: #0072b2;
}
/* S301 parity pass — a brass service rail restores the reference's practical category cue
   while keeping all manufacturer references explicitly illustrative. */
.copperline-service-rail { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:0; background:var(--black-2); color:rgba(247,245,240,.78); border-bottom:1px solid rgba(227,210,125,.35); }
.copperline-service-rail > span, .copperline-service-rail > a { padding:.55rem .85rem; border-right:1px solid rgba(255,255,255,.12); font-size:.61rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; }
.copperline-service-rail__label { color:var(--brass-hot); }
.copperline-service-rail a { color:var(--brass-hot); text-decoration:underline; text-underline-offset:.18em; }
@media (max-width:700px) {
  .copperline-service-rail { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); overflow:visible; }
  .copperline-service-rail__label { grid-column:1 / -1; }
  .copperline-service-rail > span, .copperline-service-rail > a { min-width:0; padding:.55rem .5rem; border-right:1px solid rgba(255,255,255,.12); font-size:.53rem; line-height:1.25; text-align:center; white-space:normal; }
  .copperline-service-rail > :nth-child(2n+1) { border-right:0; }
  .copperline-service-rail__label { text-align:left!important; }
}

/* S301 trust-role closeout — boiler installation sites need the manufacturer/warranty cue
   beside the product image. These are clearly illustrative routes awaiting owner approval. */
.hero-brandrail { display:grid; grid-template-columns:auto repeat(3,1fr); gap:.4rem; align-items:center; margin-top:1rem; padding:.65rem .8rem; border-top:1px solid rgba(227,210,125,.4); border-bottom:1px solid rgba(227,210,125,.25); background:rgba(8,8,8,.7); }
.hero-brandrail::before { content:"MANUFACTURER ROUTE / ILLUSTRATIVE"; color:var(--brass-hot); font-size:.5rem; font-weight:800; letter-spacing:.1em; }
.hero-brandrail > span { color:rgba(247,245,240,.72); font-size:.55rem; }
.hero-brandrail .brand-word { color:var(--brass-hot); font-size:.78rem; font-weight:800; }
.hero-brandrail small { display:block; color:rgba(247,245,240,.54); font-size:.45rem; font-weight:500; }
.hero-visual { position:relative; }
.hero-visual::after { position:absolute; left:1rem; bottom:1rem; padding:.5rem .65rem; color:#080808; background:var(--brass-hot); content:"BOILER INSTALLATION / PREVIEW"; font-size:.53rem; font-weight:900; letter-spacing:.1em; }
@media (max-width:700px) { .hero-brandrail { grid-template-columns:1fr 1fr 1fr; } .hero-brandrail::before { grid-column:1 / -1; } .hero-visual::after { left:.7rem; bottom:.7rem; font-size:.48rem; } }
@media (max-width:700px) { .hero-visual img { object-position:50% 48%; } }

/* S301 boiler-role closeout — make the installer/product frame and the honest approval/warranty
   cue visible together in the first viewport, matching the competitor's trust-heavy opening. */
.hero-visual::before { position:absolute; inset:0; z-index:1; background:linear-gradient(90deg,rgba(8,8,8,.2),transparent 35%),linear-gradient(0deg,rgba(8,8,8,.44),transparent 35%); content:""; pointer-events:none; }
.hero-visual::after { inset:auto auto 1rem 1rem; z-index:2; }
@media (min-width:701px) { .hero-visual img { object-position:31% 48%; } }
.hero-warranty { position:absolute; left:1rem; bottom:4.2rem; z-index:3; max-width:14rem; padding:.7rem .8rem; color:#f7f5f0; background:rgba(8,8,8,.84); border-left:3px solid var(--brass-hot); box-shadow:0 .8rem 1.8rem rgba(0,0,0,.24); }
.hero-warranty span { display:block; color:var(--brass-hot); font-size:.52rem; font-weight:900; letter-spacing:.12em; }
.hero-warranty strong { display:block; margin-top:.3rem; font:800 .85rem/1.1 var(--display); }
.hero-warranty small { display:block; margin-top:.35rem; color:#c4c0b5; font-size:.58rem; line-height:1.35; }
@media (max-width:700px) { .hero-warranty { left:.7rem; bottom:3.7rem; max-width:12rem; padding:.55rem .65rem; } .hero-warranty strong { font-size:.74rem; } }

/* S301 opening-parity closeout — the mapped boiler reference exposes its four
   service choices immediately below the hero. Bring Copperline's existing proof
   rail into that same first-viewport role without inventing a live certification. */
@media (min-width:901px) {
  .hero-grid { height:clamp(30rem,50vh,34rem); min-height:0; }
  .hero-copy { padding-top:1.35rem; padding-bottom:1rem; }
  .hero h1 { max-width:none; margin-top:.72rem; font-size:clamp(2.6rem,3.8vw,3.75rem); }
  .hero-lede { max-width:34rem; margin-top:.7rem; font-size:.96rem; }
  .hero-points { margin-top:.8rem; gap:.45rem 1.1rem; font-size:.8rem; }
  .hero-actions { margin-top:.95rem; }
  .hero-foot { display:none; }
  .hero-visual { height:100%; min-height:0; }
  .hero-visual img { height:100%; min-height:0; object-position:100% center; }
  .proof-rail { position:relative; z-index:4; }
  .hero-brandrail { display:none; }
}

/* S301 A&A role closeout: make the boiler-category strip and privacy surface visible in the
   opening sequence while keeping every assurance explicitly illustrative. */
.copperline-product-rail { display:grid; grid-template-columns:repeat(4,1fr); background:var(--black-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.copperline-product-rail a { display:grid; justify-items:center; gap:.35rem; padding:1rem .7rem 1.15rem; color:var(--brass); border-right:1px solid var(--line); text-align:center; text-decoration:none; }
.copperline-product-rail a:last-child { border-right:0; }
.copperline-product-rail a:hover { background:rgba(227,210,125,.08); color:var(--brass-hot); }
.copperline-product-icon { display:grid; place-items:center; min-height:4.7rem; font-size:0!important; }
.copperline-product-icon svg { width:4.5rem; height:4.5rem; fill:none; stroke:currentColor; stroke-linecap:round; stroke-linejoin:round; stroke-width:2; }
.copperline-product-rail strong { font-size:.74rem; font-weight:500; }
.copperline-privacy { position:fixed; right:0; bottom:0; left:0; z-index:50; display:flex; align-items:center; justify-content:space-between; gap:2rem; padding:1.1rem max(1rem,calc((100% - var(--wrap))/2)); color:var(--ink); background:var(--paper); border-top:1px solid rgba(23,23,19,.2); box-shadow:0 -1.1rem 2.5rem rgba(0,0,0,.18); transition:opacity .24s ease, transform .24s ease; }
.copperline-privacy.is-dismissed { opacity:0; transform:translateY(100%); pointer-events:none; }
.copperline-privacy h2 { font-size:1rem; }
.copperline-privacy p { max-width:58ch; margin-top:.25rem; color:#6d685c; font-size:.72rem; line-height:1.4; }
.copperline-privacy-actions { display:flex; flex:0 0 auto; gap:.5rem; }
.copperline-privacy-actions button { padding:.75rem .9rem; border:1px solid var(--black); color:var(--black); background:transparent; font-size:.61rem; font-weight:900; letter-spacing:.08em; text-transform:uppercase; cursor:pointer; }
.copperline-privacy-actions button:last-child { color:var(--paper); background:var(--black); }
.copperline-privacy-actions button:hover { color:var(--black); background:var(--brass); border-color:var(--brass); }
/* Keep the shared Help launcher clear of the initial consent surface. This is a real first-load
   state, not a capture-only preference: the two fixed controls otherwise compete for the same
   bottom-right pixels and the Accept action becomes partly obscured. Mobile consent is in flow
   below the product rail, so it does not need a second fixed offset. */
@media (min-width:701px) {
  body:has(.copperline-privacy:not(.is-dismissed)) .a11y-dock { bottom: 7.25rem; }
}
@media (max-width:700px) { .copperline-product-rail { grid-template-columns:repeat(2,1fr); } .copperline-product-rail a:nth-child(2) { border-right:0; } .copperline-privacy { position:static; display:block; padding:1rem; box-shadow:none; } .copperline-privacy p { font-size:.68rem; } .copperline-privacy-actions { margin-top:.7rem; } .copperline-privacy-actions button { flex:1; padding-inline:.45rem; font-size:.54rem; } }

/* S301 mobile form handoff — the hero action should meet the first field cleanly after a
   keyboard or thumb tap, without changing Copperline's image-led opening height. */
#contact-form { scroll-margin-top: 1.25rem; }