:root {
      --brand: #243892;
      --brand-dark: #0b1636;
      --brand-mid: #1a2b70;
      --brand-light: #4a9eff;
      --green: #00d68f;
      --ink: #111827;
      --body: #374151;
      --muted: #6b7280;
      --line: #e8eaf0;
      --border-light: #dde4f0;
      --soft: #f5f6f9;
      --warm: #f0f2f7;
      --white: #ffffff;
      --shadow-sm: 0 8px 22px rgba(17, 24, 39, .06);
      --shadow-md: 0 18px 42px rgba(17, 24, 39, .10);
      --r-sm: 6px;
      --r-md: 8px;
      --font-body: Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --font-display: Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --content: min(1500px, calc(100vw - 40px));
    }

    .voltcrave-blog-main,
    .voltcrave-blog-main * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    .voltcrave-blog-main {
      font-family: var(--font-body);
      color: var(--body);
      background: var(--white);
      font-size: 16px;
      line-height: 1.72;
      -webkit-font-smoothing: antialiased;
    }
    .voltcrave-blog-main img { max-width: 100%; display: block; }
    .voltcrave-blog-main a { color: inherit; }

    .blog-hero {
      position: relative;
      min-height: 540px;
      display: flex;
      align-items: center;
      isolation: isolate;
      overflow: hidden;
      color: #fff;
      background: var(--brand-dark);
    }
    .blog-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(11,22,54,.92) 0%, rgba(11,22,54,.72) 42%, rgba(11,22,54,.18) 100%),
        var(--hero-bg, url("https://voltcravepower.com/wp-content/uploads/2026/08/VoltCrave-lithium-battery-and-energy-storage-solutions-for-residential-commercial-and-portable-power-applications.webp")) center right / cover no-repeat;
      z-index: -2;
    }
    .blog-hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0 0;
      height: 120px;
      background: linear-gradient(0deg, rgba(11,22,54,.55), transparent);
      z-index: -1;
    }
    .hero-inner {
      width: var(--content);
      margin: 0 auto;
      padding: 86px 0 72px;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 24px;
      font-family: var(--font-display);
      font-size: 13px;
      color: rgba(255,255,255,.58);
    }
    .breadcrumb a {
      color: rgba(255,255,255,.75);
      text-decoration: none;
    }
    .breadcrumb a:hover { color: #fff; }
    .article-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 18px;
      font-family: var(--font-display);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0;
      text-transform: uppercase;
      color: rgba(255,255,255,.72);
    }
    .article-kicker::before {
      content: "";
      width: 32px;
      height: 2px;
      background: linear-gradient(90deg, var(--brand-light), var(--green));
      border-radius: 2px;
    }
    .blog-hero h1 {
      max-width: 820px;
      margin: 0;
      font-family: var(--font-display);
      font-size: 4rem;
      line-height: 1.06;
      letter-spacing: 0;
      color: #fff;
    }
    .hero-summary {
      max-width: 680px;
      margin: 22px 0 0;
      color: rgba(255,255,255,.72);
      font-size: 1.05rem;
      line-height: 1.65;
    }
    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      margin-top: 30px;
      color: rgba(255,255,255,.64);
      font-family: var(--font-display);
      font-size: 13px;
    }
    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .meta-item svg {
      width: 15px;
      height: 15px;
      color: var(--green);
    }

    .main-wrap {
      width: var(--content);
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: clamp(34px, 5vw, 64px);
      padding: clamp(54px, 7vw, 84px) 0;
    }
    .article-card {
      min-width: 0;
      display: grid;
      gap: 24px;
    }
    .feature-image {
      margin: 0;
      border-radius: 26px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: 0 14px 34px rgba(17, 24, 39, .08);
      background: var(--warm);
    }
    .feature-image img {
      width: 100%;
      aspect-ratio: 16 / 8.5;
      object-fit: cover;
      display: block;
    }
    .article-body {
      max-width: none;
      padding: clamp(22px, 3vw, 34px);
      border: 1px solid var(--border-light);
      border-radius: 24px;
      background: linear-gradient(180deg, #ffffff 0%, #fbfcfe 100%);
      box-shadow: var(--shadow-sm);
    }
    .article-body > p:first-child {
      font-size: 1.13rem;
      color: var(--brand) !important;
    }
    .article-body h2 {
      margin: 44px 0 14px;
      font-family: var(--font-display);
      font-size: 2rem;
      line-height: 1.2;
      letter-spacing: 0;
      color: var(--ink);
    }
    .article-body h3 {
      margin: 28px 0 10px;
      font-family: var(--font-display);
      font-size: 1.13rem;
      line-height: 1.35;
      color: var(--ink);
    }
    .article-body p {
      margin: 0 0 19px;
    }
    .article-body ul {
      margin: 0 0 24px;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }
    .article-body li {
      position: relative;
      padding-left: 24px;
    }
    .article-body li::before {
      content: "";
      position: absolute;
      left: 0;
      top: .72em;
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--brand-light), var(--green));
    }
    .article-body a {
      color: var(--brand);
      font-weight: 600;
      text-decoration-thickness: 1px;
      text-underline-offset: 3px;
    }
    .callout {
      margin: 34px 0;
      padding: 26px 28px;
      border-left: 4px solid var(--green);
      border-radius: var(--r-md);
      background: linear-gradient(135deg, rgba(36,56,146,.06), rgba(0,214,143,.06));
      color: var(--ink);
    }
    .callout strong {
      display: block;
      margin-bottom: 8px;
      font-family: var(--font-display);
      color: var(--brand);
    }
    .spec-table-wrap {
      margin: 28px 0 36px;
      border: 1px solid var(--line);
      border-radius: 18px;
      overflow: hidden;
      background: #fff;
      box-shadow: 0 14px 34px rgba(17, 24, 39, .07);
    }
    .spec-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      font-size: 14px;
      line-height: 1.55;
    }
    .spec-table th,
    .spec-table td {
      padding: 17px 18px;
      text-align: left;
      vertical-align: top;
    }
    .spec-table thead th {
      font-family: var(--font-display);
      font-size: 13px;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--brand-dark), var(--brand-mid));
    }
    .spec-table thead th + th {
      border-left: 1px solid rgba(255,255,255,.14);
    }
    .spec-table tbody th,
    .spec-table tbody td {
      border-bottom: 1px solid var(--line);
    }
    .spec-table tbody th {
      width: 28%;
      font-family: var(--font-display);
      font-weight: 700;
      color: var(--brand);
      background: linear-gradient(135deg, rgba(36,56,146,.06), rgba(0,214,143,.06));
    }
    .spec-table tbody td {
      color: var(--body);
      background: #fff;
    }
    .spec-table tbody th + td,
    .spec-table tbody td + td {
      border-left: 1px solid var(--line);
    }
    .spec-table tbody tr:hover th {
      background: linear-gradient(135deg, rgba(36,56,146,.09), rgba(0,214,143,.09));
    }
    .spec-table tbody tr:hover td {
      background: #fbfdff;
    }
    .spec-table tbody tr:last-child th,
    .spec-table tbody tr:last-child td {
      border-bottom: 0;
    }
    .share-strip {
      margin-top: 40px;
      padding-top: 22px;
      border-top: 1px solid var(--line);
      display: flex;
      align-items: center;
      justify-content: flex-start;
      gap: 16px;
      flex-wrap: wrap;
    }
    .share-label {
      font-family: var(--font-display);
      font-size: 14px;
      font-weight: 600;
      color: var(--ink);
      margin-right: 2px;
    }
    .share-icons {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .share-square {
      width: 52px;
      height: 52px;
      border-radius: 8px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: #fff !important;
      box-shadow: 0 6px 16px rgba(17, 24, 39, .08);
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
      flex: 0 0 auto;
    }
    .share-square:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(17, 24, 39, .12);
      filter: brightness(1.03);
    }
    .share-square svg {
      width: 20px;
      height: 20px;
      fill: #fff;
      stroke: #fff;
    }
    .share-square svg path {
      fill: #fff;
      stroke: #fff;
    }
    .share-square--facebook { background: #5267b0; }
    .share-square--x { background: #000000; }
    .share-square--linkedin { background: #0a66c2; }
    .share-square--reddit { background: #ff4500; }
    .inline-cta {
      margin-top: 28px;
      padding: clamp(24px, 3.4vw, 34px);
      border-radius: 24px;
      color: #fff;
      background: linear-gradient(160deg, #0b1636, #13204a, #0d1a3e);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 24px;
      overflow: hidden;
      position: relative;
    }
    .inline-cta::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
      background-size: 42px 42px;
      opacity: .55;
    }
    .inline-cta > * {
      position: relative;
    }
    .inline-cta h2 {
      margin: 0 0 9px;
      font-family: var(--font-display);
      font-size: 1.9rem;
      line-height: 1.18;
      letter-spacing: 0;
      color: #fff;
    }
    .inline-cta p {
      margin: 0;
      max-width: 560px;
      color: rgba(255,255,255,.68);
      font-size: 14px;
      line-height: 1.6;
    }

    .sidebar {
      min-width: 0;
      align-self: start;
      position: sticky;
      top: 88px;
      height: max-content;
    }
    .admin-bar .sidebar {
      top: 120px;
    }
    .sticky-side {
      display: grid;
      gap: 18px;
      align-self: start;
    }
    .side-block {
      border: 1px solid var(--line);
      border-radius: var(--r-md);
      background: #fff;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .side-block--dark {
      border-color: rgba(255,255,255,.08);
      color: #fff;
      background: linear-gradient(160deg, #0b1636, #13204a, #0d1a3e);
    }
    .side-hd {
      margin: 0;
      padding: 20px 22px 14px;
      font-family: var(--font-display);
      font-size: 16px;
      color: var(--ink);
    }
    .side-block--dark .side-hd { color: #fff; }
    .toc {
      margin: 0;
      padding: 0 22px 22px;
      list-style: none;
      display: grid;
      gap: 10px;
      font-size: 14px;
      max-height: 280px;
      overflow-y: auto;
      overscroll-behavior: contain;
      scrollbar-width: thin;
    }
    .toc::-webkit-scrollbar { width: 4px; }
    .toc::-webkit-scrollbar-track { background: transparent; }
    .toc::-webkit-scrollbar-thumb { background: #d7dbe5; border-radius: 10px; }
    .toc a {
      display: block;
      padding-left: 13px;
      border-left: 2px solid var(--line);
      color: var(--muted);
      text-decoration: none;
      transition: color .2s ease, border-color .2s ease;
    }
    .toc a:hover {
      color: var(--brand);
      border-left-color: var(--green);
    }
    .side-body {
      padding: 0 22px 22px;
    }
    .side-body p {
      margin: 0 0 18px;
      color: rgba(255,255,255,.68);
      font-size: 14px;
      line-height: 1.58;
    }
    .side-list {
      margin: 0;
      padding: 0 22px 22px;
      list-style: none;
      display: grid;
      gap: 14px;
    }
    .side-list a {
      display: grid;
      gap: 4px;
      color: var(--ink);
      text-decoration: none;
      font-family: var(--font-display);
      font-size: 14px;
      line-height: 1.35;
      transition: color .2s ease;
    }
    .side-list a:visited { color: var(--brand) !important; }
    .side-list a:hover { color: var(--brand-mid) !important; }
    .voltcrave-blog-main .sidebar .side-list > li > a,
    .voltcrave-blog-main .sidebar .side-list > li > a:link,
    .voltcrave-blog-main .sidebar .side-list > li > a:visited {
      color: var(--brand) !important;
    }
    .voltcrave-blog-main .sidebar .side-list > li > a:hover {
      color: var(--brand-mid) !important;
    }
    .side-list span {
      color: var(--muted) !important;
      font-family: var(--font-body);
      font-size: 12px;
    }
    .voltcrave-blog-main .sidebar .side-list > li > a span {
      color: var(--muted) !important;
    }
    .category-list {
      margin: 0;
      padding: 0 22px 22px;
      list-style: none;
      display: grid;
      gap: 9px;
    }
    .category-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      min-height: 42px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: var(--r-sm);
      color: var(--ink);
      font-family: var(--font-display);
      font-size: 13px;
      font-weight: 600;
      text-decoration: none;
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }
    .category-list a:hover {
      color: var(--brand);
      border-color: rgba(36,56,146,.45);
      background: var(--soft);
    }
    .category-list span {
      color: var(--green);
      font-size: 15px;
      line-height: 1;
    }
    .download-link {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 14px 22px;
      border-top: 1px solid var(--line);
      color: var(--ink);
      text-decoration: none;
      transition: background .2s ease;
    }
    .download-link:hover { background: var(--soft); }
    .download-icon {
      display: inline-flex;
      width: 38px;
      height: 38px;
      align-items: center;
      justify-content: center;
      border-radius: var(--r-sm);
      background: rgba(36,56,146,.07);
      color: var(--brand);
      flex: 0 0 auto;
    }
    .download-icon svg { width: 18px; height: 18px; }
    .download-link strong {
      display: block;
      font-family: var(--font-display);
      font-size: 13px;
      line-height: 1.3;
    }
    .download-link span {
      font-size: 12px;
      color: var(--muted);
    }
    .side-cta {
      display: inline-flex;
      width: 100%;
      min-height: 44px;
      align-items: center;
      justify-content: center;
      border-radius: var(--r-sm);
      color: #fff;
      background: linear-gradient(135deg, #4a9eff, #2ec97a);
      font-family: var(--font-display);
      font-size: 13px;
      font-weight: 700;
      text-decoration: none;
    }
    .share-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }
    .share-actions--stack {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .related {
      padding: clamp(54px, 7vw, 78px) 0;
      background: var(--soft);
    }
    .section-inner {
      width: var(--content);
      margin: 0 auto;
    }
    .section-label {
      margin-bottom: 8px;
      font-family: var(--font-display);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0;
      color: var(--brand);
      text-transform: uppercase;
    }
    .section-title {
      margin: 0 0 28px;
      max-width: 620px;
      font-family: var(--font-display);
      font-size: 2.25rem;
      line-height: 1.16;
      letter-spacing: 0;
      color: var(--ink);
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .post-card {
      min-width: 0;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--r-md);
      background: #fff;
      box-shadow: var(--shadow-sm);
      text-decoration: none;
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .post-card:hover {
      transform: translateY(-3px);
      border-color: rgba(36,56,146,.45);
      box-shadow: var(--shadow-md);
    }
    .post-card img {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      background: var(--warm);
    }
    .post-card__body {
      padding: 20px 20px 22px;
    }
    .post-card__meta {
      margin-bottom: 10px;
      font-family: var(--font-display);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0;
      color: var(--green);
      text-transform: uppercase;
    }
    .post-card h3 {
      margin: 0 0 9px;
      font-family: var(--font-display);
      font-size: 16px;
      line-height: 1.35;
      color: var(--ink);
    }
    .post-card p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .voltcrave-blog-main .btn {
      display: inline-flex;
      min-height: 46px;
      align-items: center;
      justify-content: center;
      padding: 0 20px;
      border-radius: var(--r-sm);
      font-family: var(--font-display);
      font-size: 13px;
      font-weight: 700;
      text-decoration: none;
      white-space: nowrap;
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
    }
    .voltcrave-blog-main .btn:hover { transform: translateY(-2px); }
    .voltcrave-blog-main .btn--white {
      color: var(--brand);
      background: #fff;
    }
    .voltcrave-blog-main .btn--primary {
      color: #fff;
      background: linear-gradient(135deg, #4a9eff, #2ec97a);
      box-shadow: 0 4px 16px rgba(74,158,255,.22);
    }
    .voltcrave-blog-main .btn--ghost {
      color: #fff;
      border: 1px solid rgba(255,255,255,.34);
      background: transparent;
    }
    .voltcrave-blog-main .btn--ghost:hover {
      border-color: #fff;
      background: rgba(255,255,255,.06);
    }

    @media (max-width: 1024px) {
      :root { --content: min(1500px, calc(100vw - 28px)); }
      body,
      .voltcrave-blog-main {
        overflow-x: hidden;
      }
      .hero-inner,
      .main-wrap,
      .section-inner {
        width: calc(100vw - 28px);
        max-width: calc(100vw - 28px);
      }
      .main-wrap {
        grid-template-columns: 1fr;
      }
      .sidebar {
        position: static;
        width: 100%;
        max-width: 100%;
      }
      .sticky-side {
        grid-template-columns: 1fr;
        align-items: start;
      }
      .side-block--dark {
        grid-column: auto;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
      .cta-actions {
        justify-content: flex-start;
      }
      .inline-cta {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 720px) {
      :root { --content: min(1500px, calc(100vw - 28px)); }
      .hero-inner,
      .main-wrap,
      .section-inner {
        width: calc(100vw - 28px);
        max-width: calc(100vw - 28px);
      }
      .blog-hero { min-height: 0; }
      .blog-hero::before {
        background:
          linear-gradient(90deg, rgba(11,22,54,.95) 0%, rgba(11,22,54,.84) 62%, rgba(11,22,54,.44) 100%),
          var(--hero-bg, url("https://voltcravepower.com/wp-content/uploads/2026/08/VoltCrave-lithium-battery-and-energy-storage-solutions-for-residential-commercial-and-portable-power-applications.webp")) center / cover no-repeat;
      }
      .hero-inner {
        padding: 58px 0 52px;
      }
      .breadcrumb { font-size: 12px; }
      .blog-hero h1 {
        max-width: 100%;
        font-size: 2.05rem;
        overflow-wrap: anywhere;
      }
      .hero-summary,
      .article-body,
      .article-body p,
      .article-body li {
        overflow-wrap: anywhere;
      }
      .hero-summary {
        font-size: .98rem;
      }
      .article-body h2 {
        font-size: 1.5rem;
      }
      .inline-cta h2,
      .section-title {
        font-size: 1.55rem;
      }
      .article-meta {
        gap: 10px 14px;
      }
      .share-strip {
        align-items: flex-start;
        flex-direction: column;
      }
      .main-wrap {
        padding: 44px 0;
      }
      .sticky-side,
      .related-grid {
        grid-template-columns: 1fr;
      }
      .feature-image img {
        aspect-ratio: 16 / 10.5;
      }
      .callout {
        padding: 22px 20px;
      }
      .spec-table-wrap {
        overflow-x: auto;
        overscroll-behavior-inline: contain;
      }
      .spec-table {
        min-width: 650px;
      }
      .spec-table th,
      .spec-table td {
        padding: 14px 16px;
      }
    }