.methane-main {
    --mh-navy: #0b1220;
    --mh-ink: #101828;
    --mh-muted: #475467;
    --mh-soft: #f6f8fb;
    --mh-line: #e4e7ec;
    --mh-teal: #0b7a75;
    --mh-teal-2: #10a39d;
    --mh-white: #ffffff;
    --mh-radius: 20px;
    --mh-shadow: 0 18px 50px rgba(16, 24, 40, .10);
    font-family: inherit;
    color: var(--mh-ink);
    background: var(--mh-white);
    overflow: hidden;
  }

  .methane-main * {
    box-sizing: border-box;
  }

  .methane-main a {
    color: inherit;
  }

  .methane-section {
    padding: 78px 20px;
  }

  .methane-container {
    max-width: 1200px;
    margin: 0 auto;
  }

  .methane-bleed {
    width: 100vw;
    margin-left: calc(50% - 50vw);
  }

  .methane-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    letter-spacing: .11em;
    text-transform: uppercase;
    color: var(--mh-teal);
    font-weight: 800;
    margin-bottom: 14px;
  }

  .methane-kicker::before {
    content: "";
    width: 28px;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
  }

  .methane-title {
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.08;
    color: var(--mh-ink);
    margin: 0 0 18px;
    font-weight: 800;
    letter-spacing: -.03em;
  }

  .methane-title.small {
    font-size: clamp(28px, 3vw, 40px);
  }

  .methane-lead {
    max-width: 850px;
    font-size: 17px;
    line-height: 1.78;
    color: var(--mh-muted);
    margin: 0;
  }

  .methane-text {
    font-size: 16px;
    line-height: 1.72;
    color: var(--mh-muted);
    margin: 0 0 16px;
  }

  .methane-soft {
    background: var(--mh-soft);
  }

  .methane-dark {
    background: var(--mh-navy);
    color: var(--mh-white);
  }

  .methane-dark .methane-title,
  .methane-dark .methane-kicker,
  .methane-dark h3,
  .methane-dark h4 {
    color: var(--mh-white);
  }

  .methane-dark .methane-lead,
  .methane-dark .methane-text,
  .methane-dark p,
  .methane-dark li {
    color: #d0d5dd;
  }

  .methane-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
  }

  .methane-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .methane-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .methane-btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
  }

  .methane-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 20px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 14px;
    line-height: 1;
    font-weight: 800;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    white-space: nowrap;
  }

  .methane-btn:hover {
    transform: translateY(-1px);
  }

  .methane-btn.primary {
    background: var(--mh-teal);
    color: #ffffff;
    box-shadow: 0 10px 24px rgba(11, 122, 117, .25);
  }

  .methane-btn.primary:hover {
    background: #086965;
  }

  .methane-btn.secondary {
    background: #ffffff;
    color: var(--mh-ink);
    border: 1px solid var(--mh-line);
  }

  .methane-btn.ghost {
    background: rgba(255, 255, 255, .10);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, .32);
  }

  .methane-image {
    width: 100%;
    display: block;
    border-radius: var(--mh-radius);
    border: 1px solid var(--mh-line);
    background: #eef2f6;
  }

  .methane-caption {
    font-size: 13px;
    line-height: 1.55;
    color: #667085;
    margin-top: 10px;
  }

  .methane-hero {
    min-height: 680px;
    padding: 112px 20px 70px;
    display: flex;
    align-items: center;
    position: relative;
    color: #ffffff;
    background:
      linear-gradient(90deg, rgba(8, 13, 24, .95) 0%, rgba(8, 13, 24, .82) 42%, rgba(8, 13, 24, .42) 100%),
      url('//ueeshop.ly200-cdn.com/u_file/UPBH/UPBH596/2606/09/photo/MethaneLeakDetectionSolution-OnlineMonitoring.png?x-oss-process=image%2Fformat%2Cwebp%2Fquality%2Cq_100') center right / cover no-repeat;
  }

  .methane-hero::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 160px;
    background: linear-gradient(180deg, rgba(255,255,255,0), #ffffff 86%);
    pointer-events: none;
  }

  .methane-hero .methane-container {
    position: relative;
    z-index: 1;
  }

  .methane-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, .72fr);
    gap: 42px;
    align-items: end;
  }

  .methane-hero .methane-kicker,
  .methane-hero .methane-title {
    color: #ffffff;
  }

  .methane-hero .methane-title {
    max-width: 780px;
    font-size: clamp(42px, 5.8vw, 76px);
  }

  .methane-hero p {
    max-width: 720px;
    font-size: 18px;
    line-height: 1.78;
    color: #d0d5dd;
    margin: 0 0 28px;
  }

  .methane-hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 28px;
  }

  .methane-hero-badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .22);
    color: #ffffff;
    font-size: 13px;
    font-weight: 800;
    backdrop-filter: blur(8px);
  }

  .methane-hero-card {
    border: 1px solid rgba(255, 255, 255, .18);
    background: rgba(255, 255, 255, .10);
    box-shadow: 0 26px 80px rgba(0, 0, 0, .25);
    border-radius: 26px;
    padding: 26px;
    backdrop-filter: blur(14px);
  }

  .methane-hero-card h3 {
    color: #ffffff;
    font-size: 22px;
    line-height: 1.25;
    margin: 0 0 18px;
    font-weight: 800;
  }

  .methane-solution-stack {
    display: grid;
    gap: 12px;
  }

  .methane-stack-item {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 12px;
    align-items: start;
    padding: 14px;
    border-radius: 16px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .15);
  }

  .methane-stack-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    background: rgba(16, 163, 157, .22);
    color: #63ebe4;
    font-weight: 900;
  }

  .methane-stack-item strong {
    display: block;
    color: #ffffff;
    font-size: 15px;
    margin-bottom: 4px;
  }

  .methane-stack-item span {
    color: #d0d5dd;
    font-size: 13.5px;
    line-height: 1.45;
  }

  .methane-quick-nav {
    margin-top: -54px;
    position: relative;
    z-index: 2;
  }

  .methane-nav-card {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #ffffff;
    border: 1px solid var(--mh-line);
    border-radius: 24px;
    box-shadow: var(--mh-shadow);
    overflow: hidden;
  }

  .methane-nav-card a {
    padding: 22px 24px;
    text-decoration: none;
    border-right: 1px solid var(--mh-line);
  }

  .methane-nav-card a:last-child {
    border-right: none;
  }

  .methane-nav-card strong {
    display: block;
    color: var(--mh-ink);
    margin-bottom: 6px;
    font-size: 15px;
  }

  .methane-nav-card span {
    color: var(--mh-muted);
    font-size: 13px;
    line-height: 1.45;
  }

  .methane-section-head {
    display: flex;
    justify-content: space-between;
    gap: 28px;
    align-items: end;
    margin-bottom: 34px;
  }

  .methane-section-head .methane-lead {
    max-width: 520px;
  }

  .methane-card {
    background: #ffffff;
    border: 1px solid var(--mh-line);
    border-radius: var(--mh-radius);
    padding: 26px;
    box-shadow: 0 6px 20px rgba(16, 24, 40, .04);
  }

  .methane-card h3 {
    font-size: 21px;
    line-height: 1.25;
    color: var(--mh-ink);
    margin: 0 0 10px;
    font-weight: 800;
  }

  .methane-card p {
    font-size: 15.5px;
    line-height: 1.68;
    color: var(--mh-muted);
    margin: 0;
  }

  .methane-card.highlight {
    background: linear-gradient(135deg, #0b7a75, #0b1220);
    color: #ffffff;
    border-color: transparent;
  }

  .methane-card.highlight h3,
  .methane-card.highlight p {
    color: #ffffff;
  }

  .methane-icon-dot {
    width: 42px;
    height: 42px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: #eaf7f6;
    color: var(--mh-teal);
    font-weight: 900;
    margin-bottom: 16px;
  }

  .methane-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 0;
  }

  .methane-list li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 10px;
    font-size: 15.5px;
    line-height: 1.55;
    color: var(--mh-muted);
  }

  .methane-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: .68em;
    width: 7px;
    height: 7px;
    background: var(--mh-teal);
    border-radius: 50%;
  }

  .methane-app-card {
    min-height: 210px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    border-radius: 22px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(255, 255, 255, .12);
    background: #141c2b;
  }

  .methane-app-card::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .52;
    background: linear-gradient(180deg, rgba(11,18,32,.10), rgba(11,18,32,.92));
  }

  .methane-app-card:nth-child(1) { background: linear-gradient(135deg, #0b1220, #0b7a75); }
  .methane-app-card:nth-child(2) { background: linear-gradient(135deg, #182235, #0b7a75); }
  .methane-app-card:nth-child(3) { background: linear-gradient(135deg, #0b1220, #344054); }
  .methane-app-card:nth-child(4) { background: linear-gradient(135deg, #173033, #0b1220); }
  .methane-app-card:nth-child(5) { background: linear-gradient(135deg, #0f1728, #134e4a); }
  .methane-app-card:nth-child(6) { background: linear-gradient(135deg, #1d2939, #0b1220); }

  .methane-app-card h3,
  .methane-app-card p {
    position: relative;
    z-index: 1;
  }

  .methane-app-card h3 {
    color: #ffffff;
    font-size: 22px;
    line-height: 1.2;
    margin: 0 0 10px;
    font-weight: 800;
  }

  .methane-app-card p {
    color: #d0d5dd;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
  }

  .methane-split-solution {
    display: grid;
    grid-template-columns: 1fr 72px 1fr;
    gap: 20px;
    align-items: stretch;
  }

  .methane-role-card {
    background: #ffffff;
    border: 1px solid var(--mh-line);
    border-radius: 26px;
    padding: 26px;
    box-shadow: var(--mh-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 22px;
  }

  .methane-role-card.dark {
    background: #0b1220;
    border-color: #1d2939;
    color: #ffffff;
  }

  .methane-role-card h3 {
    font-size: clamp(25px, 2.4vw, 34px);
    line-height: 1.16;
    margin: 0 0 12px;
    font-weight: 800;
    color: var(--mh-ink);
  }

  .methane-role-card.dark h3 {
    color: #ffffff;
  }

  .methane-role-card p {
    color: var(--mh-muted);
    line-height: 1.68;
    margin: 0;
  }

  .methane-role-card.dark p,
  .methane-role-card.dark li {
    color: #d0d5dd;
  }

  .methane-role-card .methane-image {
    border-radius: 18px;
    min-height: 260px;
    object-fit: contain;
  }

  .methane-connector {
    display: grid;
    place-items: center;
    min-height: 100%;
  }

  .methane-connector span {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--mh-teal);
    color: #ffffff;
    font-weight: 900;
    box-shadow: 0 12px 30px rgba(11, 122, 117, .26);
  }

  .methane-pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }

  .methane-pill {
    display: inline-flex;
    align-items: center;
    min-height: 31px;
    border-radius: 999px;
    padding: 7px 12px;
    background: #eaf7f6;
    color: var(--mh-teal);
    font-size: 13px;
    font-weight: 800;
  }

  .methane-role-card.dark .methane-pill {
    color: #ffffff;
    background: rgba(255, 255, 255, .12);
  }

  .methane-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-top: 36px;
  }

  .methane-timeline::before {
    content: "";
    position: absolute;
    left: 7%;
    right: 7%;
    top: 30px;
    height: 2px;
    background: rgba(255, 255, 255, .22);
  }

  .methane-step-card {
    position: relative;
    z-index: 1;
    padding: 0 10px;
  }

  .methane-step-num {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--mh-teal-2);
    color: #ffffff;
    font-size: 18px;
    font-weight: 900;
    margin-bottom: 18px;
    border: 8px solid #0b1220;
  }

  .methane-step-card h3 {
    font-size: 20px;
    line-height: 1.25;
    margin: 0 0 8px;
    color: #ffffff;
    font-weight: 800;
  }

  .methane-step-card p {
    font-size: 14.5px;
    line-height: 1.65;
    color: #d0d5dd;
    margin: 0;
  }

  .methane-product-panel {
    display: grid;
    grid-template-columns: .92fr 1.08fr;
    gap: 34px;
    align-items: center;
    padding: 32px;
    border: 1px solid var(--mh-line);
    border-radius: 26px;
    background: #ffffff;
    box-shadow: var(--mh-shadow);
  }

  .methane-product-panel + .methane-product-panel {
    margin-top: 30px;
  }

  .methane-product-panel.reverse {
    grid-template-columns: 1.08fr .92fr;
  }

  .methane-product-panel h3 {
    font-size: clamp(28px, 3vw, 40px);
    line-height: 1.15;
    margin: 0 0 16px;
    color: var(--mh-ink);
    font-weight: 800;
    letter-spacing: -.02em;
  }

  .methane-image-stack {
    display: grid;
    gap: 14px;
  }

  .methane-specs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 24px 0 18px;
  }

  .methane-spec {
    background: var(--mh-soft);
    border: 1px solid var(--mh-line);
    border-radius: 16px;
    padding: 16px;
  }

  .methane-spec strong {
    display: block;
    color: var(--mh-ink);
    font-size: 19px;
    line-height: 1.1;
    margin-bottom: 6px;
    font-weight: 900;
  }

  .methane-spec span {
    color: #667085;
    font-size: 13px;
    line-height: 1.45;
  }

  .methane-decision-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .methane-decision-card {
    background: #ffffff;
    border: 1px solid var(--mh-line);
    border-radius: 24px;
    padding: 26px;
    min-height: 100%;
  }

  .methane-decision-card h3 {
    font-size: 24px;
    line-height: 1.22;
    margin: 0 0 12px;
    font-weight: 800;
    color: var(--mh-ink);
  }

  .methane-decision-card p {
    color: var(--mh-muted);
    line-height: 1.65;
    margin: 0;
  }

  .methane-decision-card.featured {
    background: #0b1220;
    color: #ffffff;
    border-color: #0b1220;
  }

  .methane-decision-card.featured h3,
  .methane-decision-card.featured p,
  .methane-decision-card.featured li {
    color: #ffffff;
  }

  .methane-gallery {
    display: grid;
    grid-template-columns: 1.2fr .8fr;
    gap: 20px;
  }

  .methane-gallery-main {
    position: relative;
  }

  .methane-gallery-main .methane-image {
    min-height: 420px;
    object-fit: cover;
  }

  .methane-gallery-side {
    display: grid;
    gap: 20px;
  }

  .methane-gallery-side .methane-image {
    min-height: 200px;
    object-fit: cover;
  }

  .methane-image-label {
    position: absolute;
    left: 20px;
    bottom: 20px;
    max-width: calc(100% - 40px);
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(11, 18, 32, .82);
    color: #ffffff;
    backdrop-filter: blur(10px);
  }

  .methane-image-label strong {
    display: block;
    font-size: 15px;
    margin-bottom: 4px;
  }

  .methane-image-label span {
    display: block;
    font-size: 13px;
    line-height: 1.45;
    color: #d0d5dd;
  }

  .methane-faq {
    border-top: 1px solid var(--mh-line);
    background: #ffffff;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(16, 24, 40, .04);
  }

  .methane-faq details {
    border-bottom: 1px solid var(--mh-line);
    padding: 22px 26px;
  }

  .methane-faq details:last-child {
    border-bottom: none;
  }

  .methane-faq summary {
    cursor: pointer;
    list-style: none;
    font-size: 18px;
    font-weight: 800;
    color: var(--mh-ink);
  }

  .methane-faq summary::-webkit-details-marker {
    display: none;
  }

  .methane-faq p {
    margin: 12px 0 0;
    color: var(--mh-muted);
    line-height: 1.72;
  }

  .methane-articles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }

  .methane-article-card {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 20px;
    align-items: stretch;
    padding: 16px;
    border-radius: 24px;
    background: #ffffff;
    border: 1px solid var(--mh-line);
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(16, 24, 40, .04);
    transition: transform .18s ease, box-shadow .18s ease;
  }

  .methane-article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--mh-shadow);
  }

  .methane-article-card img {
    width: 100%;
    height: 100%;
    min-height: 150px;
    border-radius: 18px;
    object-fit: cover;
    background: #eef2f6;
  }

  .methane-article-card time {
    display: block;
    color: var(--mh-teal);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .methane-article-card h3 {
    color: var(--mh-ink);
    font-size: 20px;
    line-height: 1.3;
    margin: 0 0 10px;
    font-weight: 800;
  }

  .methane-article-card p {
    color: var(--mh-muted);
    font-size: 14.5px;
    line-height: 1.6;
    margin: 0 0 12px;
  }

  .methane-article-card span {
    color: var(--mh-teal);
    font-size: 14px;
    font-weight: 900;
  }

  .methane-final-cta {
    min-height: 620px;
    display: flex;
    align-items: center;
    padding: 92px 20px;
    position: relative;
    color: #ffffff;
    background:
      linear-gradient(90deg, rgba(8, 13, 24, .95), rgba(8, 13, 24, .78) 46%, rgba(8, 13, 24, .42)),
      url('//ueeshop.ly200-cdn.com/u_file/UPBH/UPBH596/2605/22/photo/Onsiteinstalledwithacoustic.jpg?x-oss-process=image%2Fformat%2Cwebp%2Fquality%2Cq_100') center center / cover no-repeat;
  }

  .methane-final-cta .methane-kicker,
  .methane-final-cta .methane-title {
    color: #ffffff;
  }

  .methane-final-cta p {
    max-width: 720px;
    color: #d0d5dd;
    font-size: 18px;
    line-height: 1.78;
    margin: 0 0 28px;
  }

  .methane-cta-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    max-width: 850px;
    margin-bottom: 28px;
  }

  .methane-cta-point {
    padding: 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, .10);
    border: 1px solid rgba(255, 255, 255, .18);
    backdrop-filter: blur(8px);
  }

  .methane-cta-point strong {
    display: block;
    color: #ffffff;
    margin-bottom: 4px;
    font-size: 15px;
  }

  .methane-cta-point span {
    color: #d0d5dd;
    font-size: 13.5px;
    line-height: 1.45;
  }

  @media (max-width: 980px) {
    .methane-section {
      padding: 62px 18px;
    }

    .methane-hero {
      min-height: auto;
      padding: 90px 18px 92px;
    }

    .methane-hero-grid,
    .methane-grid-2,
    .methane-product-panel,
    .methane-product-panel.reverse,
    .methane-gallery,
    .methane-split-solution {
      grid-template-columns: 1fr;
    }

    .methane-nav-card,
    .methane-grid-3,
    .methane-grid-4,
    .methane-decision-grid,
    .methane-articles,
    .methane-cta-points {
      grid-template-columns: 1fr 1fr;
    }

    .methane-connector {
      min-height: 40px;
    }

    .methane-connector span {
      transform: rotate(90deg);
    }

    .methane-timeline {
      grid-template-columns: 1fr;
    }

    .methane-timeline::before {
      left: 31px;
      right: auto;
      top: 0;
      bottom: 0;
      width: 2px;
      height: auto;
    }

    .methane-step-card {
      display: grid;
      grid-template-columns: 74px 1fr;
      gap: 14px;
      padding: 0;
    }

    .methane-step-num {
      margin: 0;
    }

    .methane-specs {
      grid-template-columns: repeat(2, 1fr);
    }

    .methane-section-head {
      display: block;
    }
  }

  @media (max-width: 640px) {
    .methane-hero .methane-title {
      font-size: 42px;
    }

    .methane-nav-card,
    .methane-grid-3,
    .methane-grid-4,
    .methane-decision-grid,
    .methane-articles,
    .methane-cta-points,
    .methane-specs {
      grid-template-columns: 1fr;
    }

    .methane-nav-card a {
      border-right: none;
      border-bottom: 1px solid var(--mh-line);
    }

    .methane-nav-card a:last-child {
      border-bottom: none;
    }

    .methane-product-panel,
    .methane-role-card {
      padding: 22px;
    }

    .methane-article-card {
      grid-template-columns: 1fr;
    }

    .methane-article-card img {
      height: 190px;
    }

    .methane-btn {
      width: 100%;
    }
  }