:root {
      --co2-ink: #17202a;
      --co2-muted: #617083;
      --co2-line: #e2e8f0;
      --co2-soft: #f7fafc;
      --co2-card: #ffffff;
      --co2-deep: #0f3d4c;
      --co2-accent: #2f8f9d;
      --co2-gold: #c9974a;
      --co2-mint: #e8f6f5;
      --co2-rose: #fff5f3;
      --co2-shadow: 0 18px 50px rgba(23, 32, 42, 0.08);
      --co2-radius: 24px;
    }

    .co2-blog-wrapper {
      font-family: Arial, Helvetica, sans-serif;
      color: var(--co2-ink);
      background: linear-gradient(180deg, #f9fbfc 0%, #ffffff 45%, #f8fbfb 100%);
      line-height: 1.75;
    }

    .co2-blog-wrapper * {
      box-sizing: border-box;
    }

    /* 防止 Ueeshop/主题全局样式拉伸图片 */
    .co2-blog-wrapper img {
      max-width: 100%;
      height: auto !important;
      display: block;
    }

    .co2-blog-wrapper a {
      color: var(--co2-deep);
      text-decoration: none;
      font-weight: 700;
      border-bottom: 1px solid rgba(47, 143, 157, 0.35);
    }

    .co2-blog-wrapper a:hover {
      color: var(--co2-accent);
    }

    .co2-container {
      width: min(1180px, calc(100% - 32px));
      margin: 0 auto;
    }

    .co2-hero {
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at top left, rgba(47, 143, 157, 0.18), transparent 38%), linear-gradient(135deg, #ffffff 0%, #eef8f8 58%, #f9efe2 100%);
      border-bottom: 1px solid var(--co2-line);
      padding: 62px 0 46px;
    }

    .co2-hero-grid {
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 38px;
      align-items: center;
    }

    .co2-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(15, 61, 76, 0.08);
      color: var(--co2-deep);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      margin-bottom: 18px;
    }

    .co2-eyebrow span {
      width: 8px;
      height: 8px;
      background: var(--co2-gold);
      border-radius: 50%;
      display: inline-block;
    }

    .co2-hero h1 {
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.06;
      margin: 0 0 20px;
      color: var(--co2-deep);
      letter-spacing: -0.04em;
    }

    .co2-lead {
      font-size: 18px;
      color: var(--co2-muted);
      max-width: 680px;
      margin: 0 0 24px;
    }

    .co2-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin-top: 24px;
    }

    .co2-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 20px;
      border-radius: 999px;
      font-weight: 800;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .co2-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(15, 61, 76, 0.12);
    }

    .co2-btn-primary {
      background: var(--co2-deep);
      color: #fff !important;
      border-bottom: none !important;
    }

    .co2-btn-secondary {
      background: #fff;
      color: var(--co2-deep) !important;
      border: 1px solid var(--co2-line) !important;
    }

    .co2-hero-media {
      background: rgba(255,255,255,0.7);
      border: 1px solid rgba(255,255,255,0.8);
      border-radius: 30px;
      padding: 14px;
      box-shadow: var(--co2-shadow);
    }

    .co2-hero-img {
      width: 100%;
      max-width: 100%;
      height: auto !important;
      aspect-ratio: 16 / 9;
      object-fit: contain;
      border-radius: 30px;
      background: #ffffff;
      border: 1px solid rgba(255,255,255,0.8);
      box-shadow: var(--co2-shadow);
    }

    .co2-image-box {
      margin: 0;
      background: #fff;
      border-radius: 22px;
      overflow: hidden;
      border: 1px solid var(--co2-line);
    }

    .co2-image-box img {
      width: 100%;
      max-width: 100%;
      height: auto !important;
      display: block;
      aspect-ratio: auto;
      object-fit: contain;
      background: #edf2f7;
    }

    .co2-image-box figcaption {
      padding: 12px 15px;
      color: var(--co2-muted);
      font-size: 13px;
      background: #fff;
    }

    .co2-meta-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
      margin-top: 28px;
    }

    .co2-meta-item {
      background: rgba(255,255,255,0.78);
      border: 1px solid var(--co2-line);
      border-radius: 18px;
      padding: 16px;
    }

    .co2-meta-item strong {
      display: block;
      color: var(--co2-deep);
      font-size: 14px;
      margin-bottom: 4px;
    }

    .co2-meta-item span {
      color: var(--co2-muted);
      font-size: 13px;
    }

    .co2-main {
      padding: 54px 0 70px;
    }

    .co2-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 34px;
      align-items: start;
    }

    .co2-content {
      min-width: 0;
    }

    .co2-section {
      background: var(--co2-card);
      border: 1px solid var(--co2-line);
      border-radius: var(--co2-radius);
      padding: clamp(24px, 4vw, 38px);
      box-shadow: 0 12px 38px rgba(15, 61, 76, 0.04);
      margin-bottom: 24px;
    }

    .co2-section h2 {
      color: var(--co2-deep);
      margin: 0 0 16px;
      font-size: clamp(25px, 3vw, 34px);
      line-height: 1.18;
      letter-spacing: -0.02em;
    }

    .co2-section h3 {
      color: var(--co2-ink);
      margin: 26px 0 10px;
      font-size: 21px;
      line-height: 1.3;
    }

    .co2-section p {
      margin: 0 0 16px;
      color: var(--co2-muted);
    }

    .co2-note {
      border-left: 4px solid var(--co2-accent);
      background: var(--co2-mint);
      border-radius: 16px;
      padding: 18px 20px;
      margin: 22px 0;
      color: #224651;
    }

    .co2-warning {
      border-left: 4px solid var(--co2-gold);
      background: #fff9ef;
      border-radius: 16px;
      padding: 18px 20px;
      margin: 22px 0;
      color: #604218;
    }

    .co2-list {
      display: grid;
      gap: 12px;
      padding: 0;
      margin: 18px 0 0;
      list-style: none;
    }

    .co2-list li {
      position: relative;
      padding: 14px 16px 14px 46px;
      background: #fbfdfe;
      border: 1px solid var(--co2-line);
      border-radius: 16px;
      color: var(--co2-muted);
    }

    .co2-list li::before {
      content: "✓";
      position: absolute;
      left: 16px;
      top: 13px;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--co2-mint);
      color: var(--co2-deep);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 13px;
    }

    .co2-result-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }

    .co2-result-card {
      background: #fbfdfe;
      border: 1px solid var(--co2-line);
      border-radius: 20px;
      padding: 20px;
    }

    .co2-result-card .co2-number {
      color: var(--co2-gold);
      font-size: 13px;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .co2-result-card h3 {
      margin-top: 8px;
      font-size: 19px;
      color: var(--co2-deep);
    }

    .co2-before-after {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin: 22px 0 10px;
    }

    .co2-ba-card {
      background: #fff;
      border: 1px solid var(--co2-line);
      border-radius: 22px;
      overflow: hidden;
    }

    .co2-ba-card img {
      width: 100%;
      max-width: 100%;
      height: auto !important;
      display: block;
      aspect-ratio: auto;
      object-fit: contain;
      background: #edf2f7;
    }

    .co2-ba-card div {
      padding: 14px 16px;
    }

    .co2-ba-card strong {
      display: block;
      color: var(--co2-deep);
      margin-bottom: 4px;
    }

    .co2-ba-card small {
      color: var(--co2-muted);
    }

    .co2-table-wrap {
      overflow-x: auto;
      border: 1px solid var(--co2-line);
      border-radius: 20px;
      margin-top: 20px;
    }

    .co2-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
      background: #fff;
    }

    .co2-table th,
    .co2-table td {
      padding: 15px 16px;
      border-bottom: 1px solid var(--co2-line);
      vertical-align: top;
      text-align: left;
    }

    .co2-table th {
      background: #f1f7f8;
      color: var(--co2-deep);
      font-size: 14px;
    }

    .co2-table td {
      color: var(--co2-muted);
      font-size: 14px;
    }

    .co2-table tr:last-child td {
      border-bottom: none;
    }

    .co2-step-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 22px;
    }

    .co2-step {
      background: linear-gradient(180deg, #ffffff 0%, #f7fbfb 100%);
      border: 1px solid var(--co2-line);
      border-radius: 20px;
      padding: 20px;
    }

    .co2-step b {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: var(--co2-deep);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    .co2-step h3 {
      margin: 0 0 8px;
      font-size: 18px;
      color: var(--co2-deep);
    }

    .co2-faq details {
      border: 1px solid var(--co2-line);
      border-radius: 18px;
      padding: 0;
      background: #fff;
      margin-bottom: 12px;
      overflow: hidden;
    }

    .co2-faq summary {
      cursor: pointer;
      padding: 18px 20px;
      font-weight: 800;
      color: var(--co2-deep);
      list-style: none;
    }

    .co2-faq summary::-webkit-details-marker {
      display: none;
    }

    .co2-faq details p {
      padding: 0 20px 20px;
      margin: 0;
    }

    .co2-sidebar {
      position: sticky;
      top: 20px;
    }

    .co2-side-card {
      background: #ffffff;
      border: 1px solid var(--co2-line);
      border-radius: var(--co2-radius);
      padding: 24px;
      box-shadow: var(--co2-shadow);
      margin-bottom: 18px;
    }

    .co2-side-card h2,
    .co2-side-card h3 {
      color: var(--co2-deep);
      margin-top: 0;
      line-height: 1.25;
    }

    .co2-side-card ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 10px;
    }

    .co2-side-card li {
      padding-bottom: 10px;
      border-bottom: 1px solid var(--co2-line);
      color: var(--co2-muted);
      font-size: 14px;
    }

    .co2-side-card li:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .co2-product-card {
      background: linear-gradient(155deg, var(--co2-deep), #1b6a74);
      color: #fff;
      border-radius: var(--co2-radius);
      padding: 26px;
      box-shadow: var(--co2-shadow);
    }

    .co2-product-card h3 {
      color: #fff;
      margin: 0 0 10px;
      font-size: 24px;
    }

    .co2-product-card p {
      color: rgba(255,255,255,0.86);
      margin-bottom: 18px;
    }

    .co2-product-card a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      min-height: 48px;
      padding: 12px 18px;
      background: #fff;
      color: var(--co2-deep) !important;
      border-radius: 999px;
      border-bottom: none !important;
      font-weight: 900;
    }

    .co2-author {
      display: flex;
      gap: 14px;
      align-items: center;
      background: #fbfdfe;
      border: 1px solid var(--co2-line);
      border-radius: 20px;
      padding: 18px;
      margin-top: 26px;
    }

    .co2-author-logo {
      flex: 0 0 56px;
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: var(--co2-mint);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--co2-deep);
      font-weight: 900;
    }

    .co2-author p {
      margin: 0;
      font-size: 14px;
    }

    .co2-final-cta {
      background: linear-gradient(135deg, #0f3d4c 0%, #257d88 100%);
      color: #fff;
      border-radius: 30px;
      padding: clamp(28px, 5vw, 46px);
      margin-top: 24px;
      overflow: hidden;
      position: relative;
    }

    .co2-final-cta h2 {
      color: #fff;
      margin-top: 0;
    }

    .co2-final-cta p {
      color: rgba(255,255,255,0.86);
      max-width: 820px;
    }

    .co2-final-cta a {
      color: #fff;
      border-bottom-color: rgba(255,255,255,0.45);
    }

    @media (max-width: 980px) {
      .co2-hero-grid,
      .co2-layout {
        grid-template-columns: 1fr;
      }

      .co2-sidebar {
        position: static;
      }

      .co2-meta-strip,
      .co2-step-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .co2-hero-img {
        border-radius: 22px;
      }
    }

    @media (max-width: 680px) {
      .co2-hero {
        padding: 40px 0 30px;
      }

      .co2-meta-strip,
      .co2-result-grid,
      .co2-before-after,
      .co2-step-grid {
        grid-template-columns: 1fr;
      }

      .co2-section,
      .co2-side-card,
      .co2-product-card {
        border-radius: 18px;
      }
    }