body[data-gas-page="true"]{--gas-accent:#f59e0b;--gas-accent-rgb:245,158,11;--gas-hero-end:#172554}
body[data-gas-variant="ignition"]{--gas-accent:#22d3ee;--gas-accent-rgb:34,211,238;--gas-hero-end:#164e63}
body[data-gas-variant="flame"]{--gas-accent:#fb923c;--gas-accent-rgb:251,146,60;--gas-hero-end:#7c2d12}
body[data-gas-variant="error"]{--gas-accent:#fb7185;--gas-accent-rgb:251,113,133;--gas-hero-end:#881337}
body[data-gas-variant="heat"]{--gas-accent:#facc15;--gas-accent-rgb:250,204,21;--gas-hero-end:#713f12}
body[data-gas-variant="ventilation"]{--gas-accent:#38bdf8;--gas-accent-rgb:56,189,248;--gas-hero-end:#0c4a6e}
body[data-gas-variant="installation"]{--gas-accent:#34d399;--gas-accent-rgb:52,211,153;--gas-hero-end:#064e3b}

body[data-gas-page="true"] #header-container{margin-top:0!important}
body[data-gas-page="true"] .gas-safe-topbar{position:fixed;inset:0 0 auto 0;height:40px;background:#7f1d1d;color:#fff;z-index:60;display:flex;align-items:center;box-shadow:0 2px 12px rgba(15,23,42,.18)}
body[data-gas-page="true"] .gas-safe-topbar__inner{width:min(1280px,100%);margin:auto;padding:0 16px;display:flex;align-items:center;justify-content:center;gap:12px;font-size:13px;font-weight:800;line-height:1.2}
body[data-gas-page="true"] .gas-safe-topbar__inner span{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body[data-gas-page="true"] .gas-safe-topbar a{text-decoration:underline;text-underline-offset:3px;white-space:nowrap;flex:0 0 auto}
body[data-gas-page="true"] #navbar{top:40px!important}
body[data-gas-page="true"] .gas-page-shell{padding-top:104px;background:#fff}
@media(min-width:1024px){body[data-gas-page="true"] .gas-page-shell{padding-top:120px}}
.gas-container{width:min(1200px,calc(100% - 32px));margin-inline:auto}
.gas-breadcrumb{border-bottom:1px solid #e2e8f0;background:#f8fafc}
.gas-breadcrumb .gas-container{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-block:12px;font-size:13px;color:#64748b}
.gas-breadcrumb a:hover{color:#c2410c}.gas-breadcrumb strong{color:#0f172a}
.gas-safety{background:#fff1f2;border-bottom:1px solid #fecdd3}
.gas-safety__inner{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;padding-block:22px}
.gas-safety__icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:#b91c1c;color:#fff;font-size:26px}
.gas-safety h2{font-size:20px;font-weight:900;color:#450a0a}.gas-safety p{margin-top:5px;color:#7f1d1d;line-height:1.55;font-size:14px}
.gas-safety a{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:#991b1b;color:#fff;font-weight:800;padding:12px 16px;white-space:nowrap}
.gas-hero{background:radial-gradient(circle at 80% 20%,rgba(var(--gas-accent-rgb),.22),transparent 32%),linear-gradient(135deg,#020617,var(--gas-hero-end));color:#fff;padding:52px 0}
.gas-hero__grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);gap:44px;align-items:center}
.gas-eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(var(--gas-accent-rgb),.45);background:rgba(var(--gas-accent-rgb),.14);color:#fff;border-radius:999px;padding:8px 13px;font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.05em}
.gas-hero h1{margin-top:18px;font-size:clamp(34px,4.5vw,62px);line-height:1.04;font-weight:900;letter-spacing:-.035em}.gas-hero__lead{margin-top:20px;max-width:760px;color:#dbeafe;font-size:18px;line-height:1.65}
.gas-hero__points{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}.gas-hero__points span{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.07);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:800;color:#e2e8f0}
.gas-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}.gas-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:14px 18px;font-weight:900;min-height:50px}.gas-btn--primary{background:#16a34a;color:#fff}.gas-btn--secondary{border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);color:#fff}.gas-btn--dark{background:#0f172a;color:#fff}.gas-btn--outline{border:1px solid #cbd5e1;background:#fff;color:#0f172a}
.gas-placeholder{margin:0;border:1px solid rgba(var(--gas-accent-rgb),.35);border-radius:24px;background:rgba(255,255,255,.06);padding:14px;box-shadow:0 22px 60px rgba(0,0,0,.25)}.gas-placeholder img{width:100%;aspect-ratio:1200/760;object-fit:cover;border-radius:16px}.gas-placeholder figcaption{padding:12px 4px 2px;color:#cbd5e1;font-size:12px;line-height:1.5}
.gas-section{padding:64px 0}.gas-section--soft{background:#f8fafc}.gas-section--dark{background:#0f172a;color:#fff}.gas-kicker{color:var(--gas-accent);font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.gas-section h2{margin-top:8px;font-size:clamp(28px,3vw,42px);line-height:1.12;font-weight:900;color:#0f172a}.gas-section--dark h2{color:#fff}.gas-section__lead{margin-top:15px;max-width:820px;color:#64748b;font-size:17px;line-height:1.7}.gas-section--dark .gas-section__lead{color:#cbd5e1}
.gas-route-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:30px}.gas-route{display:block;border:1px solid #e2e8f0;border-radius:18px;background:#fff;padding:20px;box-shadow:0 8px 24px rgba(15,23,42,.05);transition:.2s}.gas-route:hover{transform:translateY(-2px);border-color:var(--gas-accent)}.gas-route i{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(var(--gas-accent-rgb),.12);color:var(--gas-accent);font-size:21px}.gas-route h3{margin-top:14px;font-weight:900;color:#0f172a}.gas-route p{margin-top:7px;color:#64748b;font-size:14px;line-height:1.55}
.gas-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:30px}.gas-card{border:1px solid #e2e8f0;border-radius:18px;background:#fff;padding:20px}.gas-card h3{font-size:17px;font-weight:900;color:#0f172a}.gas-card p{margin-top:9px;color:#64748b;line-height:1.6;font-size:14px}.gas-section--dark .gas-card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}.gas-section--dark .gas-card h3{color:#fff}.gas-section--dark .gas-card p{color:#cbd5e1}
.gas-observation{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.72fr);gap:32px;align-items:start}.gas-checklist{margin-top:26px;display:grid;gap:12px}.gas-checklist li{display:flex;gap:12px;align-items:flex-start;color:#334155;line-height:1.55}.gas-checklist i{flex:0 0 28px;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:#dcfce7;color:#166534;margin-top:1px}.gas-quickbox{border-radius:22px;background:#0f172a;color:#fff;padding:26px}.gas-quickbox h3{font-size:22px;font-weight:900}.gas-quickbox p{margin-top:10px;color:#cbd5e1;line-height:1.6}.gas-quickbox .gas-btn{width:100%;margin-top:18px}
.gas-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.gas-related a{border:1px solid #cbd5e1;border-radius:12px;background:#fff;padding:10px 13px;font-size:14px;font-weight:800;color:#334155}.gas-related a:hover{border-color:var(--gas-accent);color:#9a3412}
.gas-faq{display:grid;gap:12px;margin-top:26px}.gas-faq details{border:1px solid #e2e8f0;border-radius:16px;background:#fff;padding:17px 18px}.gas-faq summary{cursor:pointer;display:flex;justify-content:space-between;gap:16px;font-weight:900;color:#0f172a}.gas-faq p{margin-top:12px;color:#64748b;line-height:1.65}
.gas-form-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:28px;align-items:start}.gas-form-intro{position:sticky;top:140px}.gas-form-intro h2{font-size:36px}.gas-form{border:1px solid #e2e8f0;border-radius:22px;background:#fff;padding:24px;box-shadow:0 12px 36px rgba(15,23,42,.08)}.gas-form__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.gas-field label{display:block;margin-bottom:7px;font-size:13px;font-weight:900;color:#334155}.gas-field input,.gas-field textarea{width:100%;border:2px solid #e2e8f0;border-radius:12px;padding:12px 13px;outline:none}.gas-field input:focus,.gas-field textarea:focus{border-color:var(--gas-accent)}.gas-field--full{grid-column:1/-1}.gas-form__notice{margin-top:16px;border:1px solid #fecdd3;border-radius:14px;background:#fff1f2;padding:13px;color:#7f1d1d;font-size:13px;line-height:1.5}.gas-consent{display:flex;gap:9px;align-items:flex-start;margin-top:14px;font-size:13px;color:#475569}.gas-form button{width:100%;margin-top:16px;border-radius:12px;background:#16a34a;color:#fff;padding:14px;font-weight:900}
@media(max-width:900px){.gas-safety__inner{grid-template-columns:auto 1fr}.gas-safety a{grid-column:1/-1}.gas-hero__grid,.gas-observation,.gas-form-wrap{grid-template-columns:1fr}.gas-placeholder{max-width:660px}.gas-route-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gas-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gas-form-intro{position:static}}
@media(max-width:600px){body[data-gas-page="true"] .gas-safe-topbar__inner{justify-content:space-between;font-size:11px;gap:8px}.gas-page-shell{padding-top:104px}.gas-safety__inner{padding-block:16px;gap:12px}.gas-safety__icon{width:42px;height:42px;border-radius:13px;font-size:21px}.gas-safety h2{font-size:17px}.gas-safety p{font-size:13px}.gas-safety a{padding:10px 12px;font-size:13px}.gas-hero{padding:36px 0}.gas-hero__grid{gap:26px}.gas-hero h1{font-size:36px}.gas-hero__lead{font-size:16px;margin-top:15px}.gas-hero__actions{display:grid;grid-template-columns:1fr}.gas-btn{width:100%}.gas-placeholder{padding:9px;border-radius:18px}.gas-placeholder img{border-radius:12px}.gas-section{padding:48px 0}.gas-route-grid,.gas-card-grid{grid-template-columns:1fr}.gas-form__grid{grid-template-columns:1fr}.gas-form{padding:18px}.gas-form-intro h2{font-size:30px}.gas-related{display:grid}.gas-related a{display:block}}