*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root { color-scheme: light;
      --sky-light: #a8d8f0; --sky-mid: #5baddc; --sky-deep: #2176ae;
      --navy: #0d2b45; --navy-dark: #081c2e;
      --flame-blue: #1a8fd1; --flame-green: #4caf50;
      --white: #ffffff; --off-white: #f0f7fc;
      --text-dark: #0d2b45; --text-mid: #2c4a63;
      --gas-safe-yellow: #f5c400;
    }
    html { scroll-behavior: smooth; }
    html { background: #ffffff; }
    body { font-family: 'Open Sans', sans-serif; color: var(--text-dark); background: var(--white); }
    .topbar { background: var(--navy-dark); color: var(--white); text-align: center; padding: 8px 20px; font-size: 0.85rem; display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
    .topbar a { color: var(--sky-light); text-decoration: none; font-weight: 600; }
    .topbar a:hover { color: var(--white); }
    nav { background: var(--navy); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 12px rgba(0,0,0,0.3); }
    .nav-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 10px 20px; gap: 12px; }
    .nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
    .nav-logo-text { color: var(--white); font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 1.1rem; line-height: 1.2; }
    .nav-logo-text span { display: block; font-weight: 400; font-size: 0.75rem; color: var(--sky-light); letter-spacing: 0.05em; }
    .nav-links { display: flex; gap: 4px; list-style: none; flex-wrap: nowrap; align-items: center; }
    .nav-links a { color: var(--sky-light); text-decoration: none; font-size: 0.8rem; font-weight: 600; padding: 6px 8px; border-radius: 4px; transition: background 0.2s, color 0.2s; white-space: nowrap; }
    .nav-links a:hover { background: var(--flame-blue); color: var(--white); }
    .nav-cta { background: var(--flame-green) !important; color: var(--white) !important; border-radius: 4px; }
    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
    .hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; }
    .hero { background: url("/images/img-0ade133ed481.jpg") center center / cover no-repeat; min-height: 500px; display: flex; align-items: center; position: relative; }
    .hero::after { content: ''; position: absolute; inset: 0; background: rgba(8,28,46,0.35); }
    .hero-inner { max-width: 1100px; margin: 0 auto; padding: 60px 24px; position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: center; }
    .hero h1 { font-family: 'Montserrat', sans-serif; font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; color: var(--white); line-height: 1.15; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,0.3); }
    .hero h1 em { font-style: normal; color: var(--sky-light); }
    .hero-sub { font-size: 1.05rem; color: rgba(255,255,255,0.92); margin-bottom: 24px; line-height: 1.65; }
    .hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
    .badge { background: rgba(255,255,255,0.15); border: 1.5px solid rgba(255,255,255,0.4); color: var(--white); font-size: 0.82rem; font-weight: 700; padding: 6px 14px; border-radius: 20px; backdrop-filter: blur(4px); }
    .badge.green { background: var(--flame-green); border-color: var(--flame-green); }
    .hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
    .btn-primary { background: var(--navy-dark); color: var(--white); padding: 13px 26px; border-radius: 6px; font-weight: 700; font-size: 0.95rem; text-decoration: none; transition: background 0.2s; display: inline-block; }
    .btn-primary:hover { background: var(--flame-blue); }
    .btn-secondary { background: transparent; color: var(--white); padding: 13px 26px; border-radius: 6px; font-weight: 700; font-size: 0.95rem; text-decoration: none; border: 2px solid rgba(255,255,255,0.7); transition: background 0.2s; display: inline-block; }
    .btn-secondary:hover { background: rgba(255,255,255,0.15); }
    .hero-card { background: rgba(8,28,46,0.85); backdrop-filter: blur(8px); color: var(--white); border-radius: 12px; padding: 28px 22px; border: 1px solid rgba(255,255,255,0.15); }
    .hero-card h2 { font-family: 'Montserrat', sans-serif; font-size: 1.05rem; font-weight: 700; color: var(--sky-light); margin-bottom: 16px; text-align: center; }
    .hero-card ul { list-style: none; }
    .hero-card ul li { padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 0.88rem; display: flex; align-items: center; gap: 10px; }
    .hero-card ul li:last-child { border-bottom: none; }
    .hero-card ul li::before { content: '✓'; color: var(--flame-green); font-weight: 700; flex-shrink: 0; }
    .hero-card .call-box { margin-top: 18px; background: var(--flame-blue); border-radius: 8px; padding: 12px; text-align: center; }
    .hero-card .call-box p { font-size: 0.78rem; color: var(--sky-light); margin-bottom: 4px; }
    .hero-card .call-box a { color: var(--white); font-weight: 800; font-size: 1.15rem; text-decoration: none; display: block; }
    .trust-bar { background: var(--navy); padding: 16px 24px; }
    .trust-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: center; align-items: center; gap: 36px; flex-wrap: wrap; }
    .trust-item { display: flex; align-items: center; gap: 10px; color: var(--white); }
    .trust-item .icon { font-size: 1.3rem; }
    .trust-item strong { display: block; font-size: 0.9rem; font-family: 'Montserrat', sans-serif; }
    .trust-item span { font-size: 0.74rem; color: var(--sky-light); }
    section { padding: 64px 24px; }
    .section-inner { max-width: 1100px; margin: 0 auto; }
    .section-label { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--flame-blue); margin-bottom: 8px; }
    .section-title { font-family: 'Montserrat', sans-serif; font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; color: var(--navy-dark); margin-bottom: 12px; line-height: 1.2; }
    .section-intro { font-size: 1rem; color: var(--text-mid); max-width: 640px; line-height: 1.7; margin-bottom: 40px; }
    .services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 22px; }
    .service-card { background: var(--white); border-radius: 10px; padding: 26px 22px; box-shadow: 0 2px 12px rgba(13,43,69,0.08); border-top: 4px solid var(--flame-blue); transition: transform 0.2s, box-shadow 0.2s; text-decoration: none; color: inherit; display: block; }
    .service-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(13,43,69,0.14); }
    .service-card .svc-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }
    .service-card h3 { font-family: 'Montserrat', sans-serif; font-size: 1rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 8px; }
    .service-card p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.65; }
    .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
    .checklist { list-style: none; }
    .checklist li { padding: 11px 0; border-bottom: 1px solid #e5eef5; display: flex; align-items: flex-start; gap: 12px; font-size: 0.93rem; color: var(--text-mid); line-height: 1.5; }
    .checklist li:last-child { border-bottom: none; }
    .checklist li .tick { color: var(--flame-green); font-weight: 700; flex-shrink: 0; margin-top: 1px; }
    .highlight-box { background: url("/images/img-0ade133ed481.jpg") center center / cover no-repeat; border-radius: 12px; padding: 36px 28px; color: var(--white); text-align: center; position: relative; overflow: hidden; }
    .highlight-box::before { content: ''; position: absolute; inset: 0; background: rgba(8,28,46,0.45); border-radius: 12px; }
    .highlight-box > * { position: relative; z-index: 1; }
    .highlight-box .big-icon { font-size: 3rem; display: block; margin-bottom: 14px; }
    .highlight-box h3 { font-family: 'Montserrat', sans-serif; font-size: 1.25rem; font-weight: 800; margin-bottom: 10px; }
    .highlight-box p { font-size: 0.9rem; opacity: 0.92; line-height: 1.65; margin-bottom: 18px; }
    .btn-white { background: var(--white); color: var(--navy-dark); padding: 12px 24px; border-radius: 6px; font-weight: 700; font-size: 0.92rem; text-decoration: none; display: inline-block; transition: background 0.2s; }
    .btn-white:hover { background: var(--off-white); }
    .bg-offwhite { background: var(--off-white); }
    .bg-navy { background: var(--navy-dark); }
    .bg-image { background: url("/images/img-0ade133ed481.jpg") center center / cover no-repeat; position: relative; }
    .bg-image::before { content: ''; position: absolute; inset: 0; background: rgba(8,28,46,0.5); }
    .bg-image .section-inner { position: relative; z-index: 1; }
    .bg-image .section-title, .bg-image .section-label { color: var(--white); }
    .bg-image .section-label { color: var(--sky-light); }
    .bg-image .section-intro { color: rgba(255,255,255,0.85); }
    .reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 22px; }
    .review-card { background: var(--white); border-radius: 10px; padding: 24px 20px; border-left: 4px solid var(--flame-blue); box-shadow: 0 2px 8px rgba(13,43,69,0.07); }
    .review-score { font-family: 'Montserrat',sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--flame-blue); margin-bottom: 6px; }
    .review-title { font-weight: 700; font-size: 0.95rem; color: var(--navy-dark); margin-bottom: 8px; }
    .review-card blockquote { font-size: 0.88rem; color: var(--text-mid); line-height: 1.7; font-style: italic; margin-bottom: 12px; }
    .review-card cite { font-style: normal; font-weight: 700; font-size: 0.82rem; color: var(--navy-dark); }
    .review-card cite span { font-weight: 400; color: var(--text-mid); }
    .areas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 32px; }
    .area-tag { background: var(--white); border: 1.5px solid #c8dff0; border-radius: 8px; padding: 11px 14px; text-align: center; font-size: 0.86rem; font-weight: 600; color: var(--navy-dark); text-decoration: none; transition: background 0.2s, border-color 0.2s, color 0.2s; display: block; }
    .area-tag:hover { background: var(--flame-blue); border-color: var(--flame-blue); color: var(--white); }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
    .contact-detail { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
    .contact-detail .icon { background: var(--navy-dark); color: var(--white); width: 42px; height: 42px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
    .contact-detail strong { display: block; font-size: 0.82rem; color: var(--navy); font-weight: 600; }
    .contact-detail a { color: var(--navy-dark); font-weight: 800; font-size: 1rem; text-decoration: none; }
    .contact-detail a:hover { text-decoration: underline; }
    .contact-form { background: var(--white); border-radius: 12px; padding: 30px 26px; box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
    .contact-form h3 { font-family: 'Montserrat', sans-serif; font-size: 1.15rem; font-weight: 700; color: var(--navy-dark); margin-bottom: 20px; }
    .form-group { margin-bottom: 14px; }
    .form-group label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-mid); margin-bottom: 5px; }
    .form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 13px; border: 1.5px solid #c8dff0; border-radius: 6px; font-size: 0.9rem; font-family: 'Open Sans', sans-serif; color: var(--text-dark); background: var(--off-white); outline: none; transition: border-color 0.2s; }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--flame-blue); background: var(--white); }
    .form-group textarea { resize: vertical; min-height: 95px; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .btn-submit { width: 100%; background: var(--navy-dark); color: var(--white); border: none; padding: 13px; border-radius: 6px; font-size: 0.95rem; font-weight: 700; font-family: 'Montserrat', sans-serif; cursor: pointer; transition: background 0.2s; margin-top: 4px; }
    .btn-submit:hover { background: var(--flame-blue); }
    footer { background: var(--navy-dark); color: var(--white); padding: 40px 24px 20px; }
    .footer-inner { max-width: 1100px; margin: 0 auto; }
    .footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 28px; }
    .footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.7; margin-top: 8px; }
    .footer-col h4 { font-family: 'Montserrat', sans-serif; font-size: 0.85rem; font-weight: 700; color: var(--sky-light); margin-bottom: 12px; letter-spacing: 0.04em; text-transform: uppercase; }
    .footer-col ul { list-style: none; max-height: 300px; overflow-y: auto; }
    .footer-col ul li { margin-bottom: 7px; }
    .footer-col ul li a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
    .footer-col ul li a:hover { color: var(--white); }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 16px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
    .footer-bottom p { font-size: 0.78rem; color: rgba(255,255,255,0.5); }
    .gas-safe-badge { background: var(--gas-safe-yellow); color: var(--navy-dark); padding: 5px 12px; border-radius: 6px; font-weight: 800; font-size: 0.8rem; }
    .page-hero { background: url("/images/img-0ade133ed481.jpg") center center / cover no-repeat; padding: 70px 24px; position: relative; }
    .page-hero::after { content: ''; position: absolute; inset: 0; background: rgba(8,28,46,0.5); }
    .page-hero-inner { max-width: 1100px; margin: 0 auto; position: relative; z-index: 1; }
    .page-hero h1 { font-family: 'Montserrat', sans-serif; font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; color: var(--white); margin-bottom: 12px; text-shadow: 0 2px 8px rgba(0,0,0,0.3); }
    .page-hero p { color: rgba(255,255,255,0.9); font-size: 1.05rem; max-width: 600px; line-height: 1.65; }
    .breadcrumb { font-size: 0.82rem; color: rgba(255,255,255,0.65); margin-bottom: 12px; }
    .breadcrumb a { color: var(--sky-light); text-decoration: none; }
    .stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 18px; margin: 36px 0; }
    .stat-box { background: var(--off-white); border-radius: 10px; padding: 22px 16px; text-align: center; }
    .stat-box .num { font-family: 'Montserrat',sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--flame-blue); display: block; }
    .stat-box .lbl { font-size: 0.82rem; color: var(--text-mid); margin-top: 4px; }
    .warning-box { background: rgba(220,50,50,0.08); border-left: 4px solid #e05050; border-radius: 0 8px 8px 0; padding: 18px 20px; margin-bottom: 22px; }
    .warning-box strong { color: #c03030; font-family: 'Montserrat',sans-serif; font-size: 0.92rem; display: block; margin-bottom: 6px; }
    .warning-box p { font-size: 0.88rem; color: var(--text-mid); line-height: 1.6; }
    @media (max-width: 768px) {
      .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--navy); padding: 12px 0; }
      .nav-links.open { display: flex; }
      .nav-links li { width: 100%; }
      .nav-links a { display: block; padding: 12px 24px; border-radius: 0; }
      .hamburger { display: flex; }
      nav { position: relative; }
      .hero-inner { grid-template-columns: 1fr; }
      .hero-card { display: none; }
      .two-col, .contact-grid { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr 1fr; }
      .form-row { grid-template-columns: 1fr; }
      .topbar { gap: 12px; font-size: 0.78rem; }
    }

/* ===== v19 additions (look unchanged; semantics, a11y and speed) ===== */
img { max-width: 100%; }
.skip-link { position: absolute; left: -999px; top: 0; background: #fff; color: var(--navy-dark); padding: 10px 16px; z-index: 3000; font-weight: 700; border-radius: 0 0 6px 0; }
.skip-link:focus { left: 0; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--flame-blue); outline-offset: 2px; }
.nav-links a[aria-current="page"] { color: var(--white); background: var(--flame-blue); }
.nav-cta[aria-current="page"] { background: var(--flame-green) !important; }
.btn-google { background: #4285F4; }
.btn-yell { background: #ffce00; color: #111; }
.btn-checkatrade { background: #e8173c; }
.btn-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 28px; }
.btn-row.left { justify-content: flex-start; margin-top: 12px; }
.review-card cite { display: block; }
.reviews-note { font-size: 0.85rem; color: var(--text-mid); margin: 0 0 26px; }

@media (max-width: 900px) {
  .footer-top { gap: 28px 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col h4 { margin-bottom: 14px; }
}
@media (max-width: 480px) {
  .footer-top { grid-template-columns: 1fr; }
}
.map-wrap { border-radius: 12px; overflow: hidden; box-shadow: 0 2px 10px rgba(13,43,69,0.12); margin-top: 20px; }
.map-wrap iframe { display: block; border: 0; width: 100%; height: 380px; }
.map-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.map-grid .map-wrap { margin-top: 0; }
.map-wrap.small iframe { height: 300px; }
.prose p { color: var(--text-mid); line-height: 1.75; margin-bottom: 16px; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--navy-dark); }
.link-list { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 18px; }
.link-list a { color: var(--flame-blue); font-weight: 700; text-decoration: none; font-size: 0.92rem; }
.link-list a:hover { text-decoration: underline; }
.checklist a, .prose a, .service-card p a { color: var(--flame-blue); font-weight: 600; }
.address-block { font-style: normal; line-height: 1.7; color: var(--navy-dark); font-weight: 600; }
.hours-list { list-style: none; margin-top: 4px; }
.hours-list li { padding: 3px 0; font-size: 0.95rem; color: var(--text-mid); }
.contact-detail .detail-text { color: var(--navy-dark); font-weight: 700; font-size: 1rem; }
.contact-detail small { display: block; font-weight: 400; color: var(--text-mid); font-size: 0.82rem; }
.area-card .postcodes { display: block; margin-top: 10px; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; color: var(--flame-blue); }
.footer-col .addr { color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.6; }
.lead-in { font-size: 1.05rem; }
.notfound { text-align: center; }
.notfound .btn-row { margin-top: 24px; }

/* FAQ accordion (native <details>, no JS needed) */
.faq-list { max-width: 780px; }
.faq-item { border-bottom: 1px solid #c8dff0; }
.faq-item:first-child { border-top: 1px solid #c8dff0; }
.faq-item summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 0; font-family: 'Montserrat', sans-serif; font-size: 1rem; font-weight: 700; color: var(--navy-dark); transition: color 0.2s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--flame-blue); }
.faq-icon { font-size: 1.4rem; font-weight: 400; color: var(--flame-blue); flex-shrink: 0; transition: transform 0.25s; line-height: 1; }
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-answer { padding-bottom: 18px; }
.faq-answer p { font-size: 0.95rem; color: var(--text-mid); line-height: 1.75; }

/* Reviews carousel (same design as v18) */
.snap-carousel { display: flex; overflow-x: scroll; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; gap: 16px; padding-bottom: 12px; scrollbar-width: none; }
.snap-carousel::-webkit-scrollbar { display: none; }
.snap-card { scroll-snap-align: start; flex: 0 0 calc(100% - 32px); max-width: 420px; background: var(--white); border-radius: 10px; padding: 24px 20px; border-left: 4px solid var(--flame-blue); box-shadow: 0 2px 8px rgba(13,43,69,0.07); }
.snap-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.snap-tag { font-size: 0.72rem; font-weight: 700; background: rgba(0,0,0,0.06); padding: 3px 8px; border-radius: 20px; }
.snap-card.ct .review-score, .snap-card.ct .snap-tag { color: #e8173c; }
.snap-card.gg .review-score, .snap-card.gg .snap-tag { color: #4285F4; }
.snap-card .review-score { margin-bottom: 0; }
@media (min-width: 640px) { .snap-card { flex: 0 0 calc(50% - 16px); } }
@media (min-width: 1000px) { .snap-card { flex: 0 0 calc(33.333% - 16px); } }
.snap-dots { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.snap-dot { width: 8px; height: 8px; border-radius: 50%; background: #c8dff0; border: none; cursor: pointer; padding: 0; transition: background 0.2s; }
.snap-dot.active { background: var(--flame-blue); }

@media (max-width: 768px) {
  .map-grid { grid-template-columns: 1fr; }
  .map-wrap iframe { height: 300px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}