:root {
  /* Brand palette — extracted from CHC logo + apparel */
  --red: #d61f26;          /* emergency red — primary CTA (CHAMPS "H" / HEATING) */
  --red-dark: #b3171d;
  --blue: #3a3f9e;         /* deep blue from CHC letters */
  --purple: #5b3fa0;       /* purple ring tones */
  --indigo: #2a2d6e;       /* deep ring shadow */
  --ink: #14161c;          /* near-black headings */
  --slate: #5c6470;        /* body text */
  --line: #e4e8ef;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --radius: 16px;
  --shadow: 0 14px 40px rgba(42, 45, 110, 0.12);
  --shadow-sm: 0 6px 18px rgba(42, 45, 110, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 22px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: 'Archivo', 'Inter', sans-serif; line-height: 1.12; letter-spacing: -0.02em; }

/* ===== Buttons ===== */
.btn {
  display: inline-block; padding: 15px 30px; border-radius: 999px;
  font-weight: 700; font-size: 15px; border: 2px solid transparent; cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  font-family: 'Archivo', sans-serif; letter-spacing: .01em;
}
.btn:hover { transform: translateY(-2px); }
.btn--red { background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%); color: #fff; box-shadow: 0 10px 26px rgba(214,31,38,.35); }
.btn--red:hover { box-shadow: 0 14px 32px rgba(214,31,38,.45); }
.btn--ghost { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.55); backdrop-filter: blur(4px); }
.btn--ghost:hover { background: rgba(255,255,255,.18); }
.btn--light { background: #fff; color: var(--indigo); }
.btn--block { width: 100%; text-align: center; }

/* ===== 1. Top bar ===== */
.topbar { background: var(--ink); color: #c7ccd8; font-size: 13.5px; }
.topbar__inner { display: flex; justify-content: space-between; align-items: center; padding: 9px 22px; }
.topbar__item { display: flex; align-items: center; gap: 9px; font-weight: 500; }
.pulse { width: 9px; height: 9px; border-radius: 50%; background: #2ecc71; box-shadow: 0 0 0 0 rgba(46,204,113,.7); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(46,204,113,.6); } 70% { box-shadow: 0 0 0 8px rgba(46,204,113,0); } 100% { box-shadow: 0 0 0 0 rgba(46,204,113,0); } }
.topbar__phone { color: #fff; font-weight: 700; }
.topbar__phone:hover { color: #ff6b70; }

/* ===== 2. Header ===== */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); transition: box-shadow .2s ease; }
.header.scrolled { box-shadow: 0 4px 20px rgba(20,22,28,.08); }
.header__inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 22px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand__logo { width: 46px; height: 46px; object-fit: contain; border-radius: 8px; }
.brand__name { font-family: 'Archivo', sans-serif; font-weight: 800; font-size: 19px; letter-spacing: .01em; color: var(--ink); line-height: 1.05; }
.brand__name strong { display: block; font-size: 12.5px; font-weight: 700; color: var(--red); letter-spacing: .06em; text-transform: uppercase; }
.brand--light .brand__name { color: #fff; }
.brand--light .brand__name strong { color: #ff7a7e; }
.nav { display: flex; align-items: center; gap: 28px; font-weight: 600; font-size: 15px; }
.nav a:not(.nav__cta) { color: var(--ink); position: relative; }
.nav a:not(.nav__cta)::after { content:""; position:absolute; left:0; bottom:-4px; width:0; height:2px; background: var(--red); transition: width .2s ease; }
.nav a:not(.nav__cta):hover::after { width: 100%; }
.nav__call { color: var(--indigo) !important; font-weight: 800; font-family:'Archivo',sans-serif; }
.nav__call:hover { color: var(--red) !important; }
.nav__call::after { display: none; }
.nav__cta { background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%); color: #fff; padding: 11px 22px; border-radius: 999px; box-shadow: 0 8px 20px rgba(214,31,38,.3); }
.nav__cta:hover { transform: translateY(-1px); }
.nav__toggle { display: none; font-size: 27px; background: none; border: none; cursor: pointer; color: var(--ink); }

/* ===== 3. Hero ===== */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(900px 500px at 78% 10%, rgba(91,63,160,.55), transparent 60%),
    linear-gradient(135deg, #1a1c4a 0%, var(--indigo) 40%, var(--blue) 100%);
}
.hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 35%; z-index: 0; }
.hero::before { content:""; position:absolute; inset:0; z-index: 1; background:
  linear-gradient(105deg, rgba(20,22,28,.92) 0%, rgba(26,28,74,.82) 42%, rgba(42,45,110,.55) 70%, rgba(58,63,158,.30) 100%); }
.hero__inner { position: relative; z-index: 2; padding: 84px 22px 92px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center; }
.hero__content { max-width: 660px; }
.hero__badge { display: inline-block; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.22); padding: 8px 18px; border-radius: 999px; font-size: 13px; font-weight: 600; margin-bottom: 22px; backdrop-filter: blur(4px); }
.hero h1 { font-size: clamp(36px, 5.5vw, 60px); font-weight: 900; margin-bottom: 18px; text-shadow: 0 2px 20px rgba(0,0,0,.25); }
.hero p { font-size: 19px; color: #e6e9f7; max-width: 560px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero__trust { list-style: none; display: flex; gap: 28px; flex-wrap: wrap; font-size: 15px; font-weight: 600; }
.hero__trust li { display: flex; align-items: center; gap: 8px; color: #eef0fb; }
.hero__trust svg { width: 19px; height: 19px; color: #8fd0ff; flex-shrink: 0; }

/* Hero lead form */
.hero-form { background: rgba(255,255,255,.97); border-radius: var(--radius); padding: 28px 26px; box-shadow: 0 24px 60px rgba(0,0,0,.4); backdrop-filter: blur(6px); }
.hero-form__title { font-size: 24px; font-weight: 800; color: var(--ink); }
.hero-form__sub { color: var(--slate); font-size: 14px; margin-bottom: 18px; }
.hero-form .field { margin-bottom: 12px; }
.hero-form input, .hero-form select { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; font-family: inherit; font-size: 15px; color: var(--ink); background: #fbfcfe; }
.hero-form input:focus, .hero-form select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(58,63,158,.12); }
.hero-form .btn { margin-top: 4px; }
.hero-form__trust { display: block; text-align: center; font-size: 12px; color: var(--slate); margin-top: 12px; }

/* ===== Stats strip ===== */
.strip { background: linear-gradient(135deg, var(--indigo), var(--blue)); color: #fff; }
.strip__inner { display: grid; grid-template-columns: repeat(4,1fr); text-align: center; padding: 34px 22px; gap: 20px; }
.strip__item strong { display: block; font-family: 'Archivo',sans-serif; font-size: 34px; font-weight: 900; }
.strip__item span { font-size: 14px; color: #d4d8f0; }

/* ===== Sections ===== */
.section { padding: 88px 0; }
.section--alt { background: var(--bg-alt); }
.services { background:
  radial-gradient(700px 380px at 88% 0%, rgba(58,63,158,.06), transparent 60%),
  radial-gradient(620px 340px at 5% 100%, rgba(214,31,38,.05), transparent 60%),
  var(--bg); }
.about { background:
  radial-gradient(640px 360px at 95% 50%, rgba(91,63,160,.06), transparent 65%),
  var(--bg); }
.section__head { text-align: center; max-width: 660px; margin: 0 auto 54px; }
.eyebrow { color: var(--red); font-weight: 800; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; font-family: 'Archivo',sans-serif; }
.section__head h2 { font-size: clamp(30px, 4vw, 44px); font-weight: 800; margin: 12px 0 14px; }
.section__head p { color: var(--slate); font-size: 17.5px; }

/* ===== Cards ===== */
.grid { display: grid; gap: 26px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; position: relative; overflow: hidden; }
.card::before { content:""; position:absolute; left:0; top:0; height:4px; width:100%; background: linear-gradient(90deg,var(--red),var(--purple)); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #d3d9e6; }
.card:hover::before { transform: scaleX(1); }
.card__icon { width: 60px; height: 60px; margin-bottom: 18px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(214,31,38,.10), rgba(58,63,158,.12)); color: var(--red); transition: background .25s ease, color .25s ease; }
.card__icon svg { width: 30px; height: 30px; }
.card:hover .card__icon { background: linear-gradient(135deg, var(--red), var(--purple)); color: #fff; }
.card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--slate); font-size: 15px; }

/* ===== Feature band (furnace) ===== */
.feature { background: linear-gradient(135deg, var(--indigo), var(--blue)); color: #fff; overflow: hidden; }
.feature__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 0; align-items: stretch; }
.feature__media { position: relative; min-height: 380px; margin: 0 -22px 0 0; }
.feature__media img { position: absolute; inset: 0; width: calc(100% + 22px); height: 100%; object-fit: cover; }
.feature__media::after { content:""; position:absolute; inset:0; background: linear-gradient(90deg, transparent 55%, rgba(42,45,110,.85) 100%); }
.feature__text { padding: 70px 0 70px 56px; align-self: center; }
.feature__text h2 { font-size: clamp(28px,4vw,42px); font-weight: 800; margin: 12px 0 16px; }
.feature__text p { color: #e0e3f7; font-size: 17px; margin-bottom: 26px; max-width: 440px; }
.feature .eyebrow { color: #ff8a8e; }

/* ===== Comfort CTA band ===== */
.comfort { position: relative; color: #fff; padding: 110px 0; overflow: hidden; }
.comfort__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.comfort::after { content:""; position:absolute; inset:0; background: linear-gradient(110deg, rgba(20,22,28,.86) 0%, rgba(26,28,74,.72) 50%, rgba(42,45,110,.45) 100%); }
.comfort__inner { position: relative; z-index: 1; max-width: 640px; }
.comfort h2 { font-size: clamp(28px,4vw,44px); font-weight: 800; margin: 12px 0 16px; }
.comfort p { color: #e6e9f7; font-size: 17.5px; margin-bottom: 26px; }
.eyebrow--light { color: #ff8a8e; }

/* ===== Before / After slider ===== */
.ba { position: relative; max-width: 720px; margin: 0 auto; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); user-select: none; aspect-ratio: 443 / 590; background: #000; }
.ba__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; pointer-events: none; }
.ba__before-wrap { position: absolute; inset: 0; width: 50%; overflow: hidden; }
.ba__before-wrap .ba__img { width: 720px; max-width: none; }
@media (max-width: 760px) { .ba__before-wrap .ba__img { width: 100vw; } }
.ba__tag { position: absolute; top: 16px; z-index: 3; background: rgba(20,22,28,.78); color: #fff; font-family:'Archivo',sans-serif; font-weight: 700; font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; padding: 6px 14px; border-radius: 999px; backdrop-filter: blur(4px); }
.ba__tag--before { left: 16px; }
.ba__tag--after { right: 16px; background: rgba(214,31,38,.85); }
.ba__handle { position: absolute; top: 0; bottom: 0; left: 50%; transform: translateX(-50%); width: 4px; z-index: 4; pointer-events: none; display: flex; align-items: center; justify-content: center; }
.ba__line { position: absolute; top: 0; bottom: 0; width: 4px; background: #fff; box-shadow: 0 0 12px rgba(0,0,0,.4); }
.ba__grip { width: 48px; height: 48px; border-radius: 50%; background: #fff; color: var(--red); display: grid; place-items: center; font-size: 22px; font-weight: 700; box-shadow: 0 6px 18px rgba(0,0,0,.35); }
.ba__range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; z-index: 5; }

/* ===== Maintenance / Why ===== */
.why__inner { display: grid; grid-template-columns: 1.25fr 1fr; gap: 54px; align-items: center; }
.why__text h2 { font-size: clamp(28px,4vw,42px); font-weight: 800; margin: 12px 0 14px; }
.why__text > p { color: var(--slate); font-size: 17.5px; margin-bottom: 22px; }
.checklist { list-style: none; margin-bottom: 28px; display: grid; gap: 13px; }
.checklist li { color: var(--slate); }
.checklist strong { color: var(--ink); }
.checklist--inline { grid-template-columns: 1fr 1fr; margin-bottom: 0; }
.why__card { position: relative; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; min-height: 360px; display: flex; align-items: flex-end; color: #fff; }
.why__card-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.why__card::after { content:""; position:absolute; inset:0; background: linear-gradient(180deg, rgba(42,45,110,.15) 0%, rgba(26,28,74,.55) 50%, rgba(20,22,28,.92) 100%); }
.why__card-body { position: relative; z-index: 1; padding: 34px; }
.why__card h3 { font-size: 25px; margin-bottom: 12px; }
.why__card p { color: #e6e9f7; margin-bottom: 22px; }

/* ===== About ===== */
.about__inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.about__logo { display: grid; place-items: center; }
.about__logo img { width: 100%; max-width: 420px; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 18px; box-shadow: var(--shadow); border: 4px solid #fff; }
.about__text h2 { font-size: clamp(28px,4vw,42px); font-weight: 800; margin: 12px 0 16px; }
.about__text p { color: var(--slate); font-size: 16.5px; margin-bottom: 16px; }

/* ===== Reviews ===== */
.review { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; box-shadow: var(--shadow-sm); }
.review__stars { color: #f5b301; font-size: 19px; letter-spacing: 2px; margin-bottom: 12px; }
.review p { font-style: italic; margin-bottom: 14px; }
.review cite { color: var(--slate); font-weight: 700; font-style: normal; font-size: 14px; }

/* ===== Contact ===== */
.contact__inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 54px; }
.contact__text h2 { font-size: clamp(28px,4vw,42px); font-weight: 800; margin: 12px 0 14px; }
.contact__text > p { color: var(--slate); font-size: 17.5px; margin-bottom: 24px; }
.contact__list { list-style: none; display: grid; gap: 13px; font-size: 16.5px; }
.contact__list a:hover { color: var(--red); }
.quote-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; font-family:'Archivo',sans-serif; }
.field input, .field select, .field textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 10px; font-family: inherit; font-size: 15px; color: var(--ink); background: #fbfcfe; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(58,63,158,.12); }
.form__note { margin-top: 14px; font-size: 14px; font-weight: 700; color: var(--indigo); text-align: center; }

/* ===== Footer ===== */
.footer { background: var(--ink); color: #aab2c0; }
.footer__inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 44px; padding: 60px 22px 44px; }
.footer .brand__logo { width: 44px; height: 44px; }
.footer__tag { margin-top: 14px; font-size: 14px; max-width: 320px; }
.footer__col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; font-family:'Archivo',sans-serif; }
.footer__col a, .footer__col span { display: block; font-size: 14px; margin-bottom: 9px; }
.footer__col a:hover { color: #fff; }
.footer__nap span:first-of-type { color: #fff; font-weight: 700; }
.footer__areas { border-top: 1px solid rgba(255,255,255,.08); }
.footer__areas .container { padding: 22px; font-size: 13.5px; line-height: 1.7; color: #9aa3b3; }
.footer__areas strong { color: #cdd4e0; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; font-size: 13px; text-align: center; }

/* ===== Mobile Floating Action Button ===== */
.fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 90;
  display: none; align-items: center; gap: 9px;
  background: linear-gradient(135deg, var(--red) 0%, var(--red-dark) 100%);
  color: #fff; padding: 14px 22px; border-radius: 999px; font-weight: 800;
  font-family: 'Archivo', sans-serif; font-size: 16px;
  box-shadow: 0 10px 30px rgba(214,31,38,.5);
  animation: fabPulse 2.2s infinite;
}
.fab__icon { font-size: 18px; }
@keyframes fabPulse { 0% { box-shadow: 0 10px 30px rgba(214,31,38,.5), 0 0 0 0 rgba(214,31,38,.5); } 70% { box-shadow: 0 10px 30px rgba(214,31,38,.5), 0 0 0 16px rgba(214,31,38,0); } 100% { box-shadow: 0 10px 30px rgba(214,31,38,.5), 0 0 0 0 rgba(214,31,38,0); } }
@media (prefers-reduced-motion: reduce) { .fab { animation: none; } }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .nav { position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 0; border-bottom: 1px solid var(--line); display: none; box-shadow: 0 12px 24px rgba(0,0,0,.08); }
  .nav.open { display: flex; }
  .nav a { padding: 14px 24px; }
  .nav__call { padding: 14px 24px; }
  .nav__cta { margin: 8px 24px; text-align: center; }
  .nav__toggle { display: block; }
  .hero__inner { grid-template-columns: 1fr; gap: 32px; padding: 60px 22px 72px; }
  .hero-form { max-width: 460px; }
  .fab { display: inline-flex; }
  .grid--3 { grid-template-columns: 1fr; }
  .strip__inner { grid-template-columns: repeat(2,1fr); }
  .why__inner, .contact__inner, .about__inner, .footer__inner { grid-template-columns: 1fr; }
  .about__logo { order: -1; }
  .feature__inner { grid-template-columns: 1fr; }
  .feature__media { min-height: 260px; margin: 0; }
  .feature__media img { width: 100%; }
  .feature__media::after { background: linear-gradient(180deg, transparent 60%, rgba(42,45,110,.85) 100%); }
  .feature__text { padding: 40px 0 8px; }
}
@media (max-width: 480px) {
  .field-row { grid-template-columns: 1fr; }
  .checklist--inline { grid-template-columns: 1fr; }
}