:root {
      --ink: #172033;
      --muted: #667085;
      --paper: #fbfcfd;
      --line: rgba(23, 32, 51, 0.11);
      --accent: #ff5b22;
      --accent-soft: #fff1e8;
      --shadow: 0 22px 70px rgba(73, 53, 31, 0.1);
      --sans: Inter, "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      --serif: Georgia, "Times New Roman", serif;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: var(--sans);
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    a {
      color: inherit;
      text-decoration-thickness: 1px;
      text-underline-offset: 4px;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .alibaba-blog,
.jd-blog,
.madechina-blog,
.taobao-blog,
.zhuanzhuan-blog {
      min-height: 100vh;
      background:
        radial-gradient(circle at 12% 8%, rgba(255, 246, 235, 0.95), transparent 30rem),
        radial-gradient(circle at 92% 12%, rgba(255, 91, 34, 0.08), transparent 34rem),
        linear-gradient(180deg, #fffaf2 0%, #fbfcfd 54%, #f6f1e9 100%);
    }
    .article-shell {
      width: min(1180px, calc(100% - 48px));
      margin: 0 auto;
      padding: 30px 0 86px;
    }
    .article-mark {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 24px;
      color: #667085;
      text-decoration: none;
      font-size: 13px;
      line-height: 1.35;
      font-weight: 700;
    }
    .article-mark img {
      width: 116px;
      height: auto;
    }
    .hero {
      margin-top: 18px;
      padding: clamp(28px, 5vw, 64px);
      border: 1px solid rgba(23, 32, 51, 0.08);
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.76);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 22px;
      color: #566174;
      font-size: 12px;
      line-height: 1.2;
      font-weight: 820;
      letter-spacing: 0.1em;
      text-transform: uppercase;
    }
    .kicker::before {
      content: "";
      width: 26px;
      height: 2px;
      border-radius: 999px;
      background: var(--accent);
    }
    h1 {
      max-width: 780px;
      margin: 0;
      color: #111827;
      font-size: clamp(34px, 3.7vw, 52px);
      line-height: 1.12;
      letter-spacing: -0.032em;
      font-weight: 600;
    }
    .lead {
      max-width: 700px;
      margin: 24px 0 0;
      color: #475467;
      font-size: clamp(17px, 1.45vw, 19px);
      line-height: 1.64;
    }
    .meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 16px;
      margin: 26px 0 0;
      padding: 0;
      color: #667085;
      list-style: none;
      font-size: 14px;
      line-height: 1.45;
      font-weight: 700;
    }
    .hero-figure {
      margin: clamp(32px, 5vw, 54px) 0 0;
    }
    .hero-figure picture {
      display: block;
      overflow: hidden;
      border-radius: 8px;
    }
    .hero-figure img,
    .article-figure img {
      width: 100%;
      border-radius: 8px;
      border: 1px solid rgba(23, 32, 51, 0.08);
      box-shadow: 0 16px 46px rgba(73, 53, 31, 0.08);
    }
    .hero-figure img {
      height: clamp(360px, 36vw, 500px);
      object-fit: cover;
      object-position: center 56%;
    }
    figcaption {
      max-width: 780px;
      margin: 12px auto 0;
      color: #6b7688;
      font-size: 13.5px;
      line-height: 1.55;
      text-align: center;
    }
    .article-content {
      width: min(800px, 100%);
      margin: 66px auto 0;
    }
    .article-body {
      color: #2f3a4a;
      font-family: var(--serif);
      font-size: clamp(18px, 1.18vw, 20px);
      line-height: 1.82;
    }
    .article-body p { margin: 0 0 24px; }
    .article-body strong { font-weight: 700; }
    .article-body h2 {
      margin: 88px 0 24px;
      color: #121a2a;
      font-family: var(--sans);
      font-size: clamp(28px, 3vw, 38px);
      line-height: 1.2;
      letter-spacing: -0.03em;
      font-weight: 600;
    }
    .article-body ul,
    .article-body ol {
      margin: 20px 0 28px;
      padding: 0;
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.62;
    }
    .article-body ul { list-style: none; }
    .article-body li {
      position: relative;
      margin: 0 0 10px;
      padding-left: 28px;
      color: #3b4658;
    }
    .article-body ul li::before {
      content: "";
      position: absolute;
      left: 3px;
      top: 0.68em;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
    }
    .article-body ol {
      padding-left: 22px;
    }
    .article-body ol li {
      padding-left: 8px;
    }
    .article-body ol li::marker {
      color: var(--accent);
      font-weight: 700;
    }
    .note {
      margin: 30px 0;
      padding: 24px 26px;
      border-left: 4px solid var(--accent);
      border-radius: 8px;
      background: var(--accent-soft);
      color: #26354a;
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.65;
    }
    .article-figure {
      margin: 38px 0 40px;
    }
    .keyword-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin: 26px 0 34px;
      font-family: var(--sans);
    }
    .keyword-card {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 14px;
      min-height: 82px;
      padding: 16px 18px;
      border: 1px solid rgba(23, 32, 51, 0.09);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 8px 24px rgba(73, 53, 31, 0.04);
    }
    .keyword-card span {
      display: block;
      color: #69707d;
      font-size: 13px;
      line-height: 1.35;
    }
    .keyword-card code {
      display: inline-block;
      margin-top: 4px;
      padding: 3px 0;
      color: #121722;
      background: transparent;
      font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", var(--sans);
      font-size: 22px;
      line-height: 1.2;
      font-weight: 650;
      user-select: all;
    }
    .copy-button {
      min-width: 90px;
      min-height: 36px;
      border: 1px solid rgba(23, 32, 51, 0.11);
      border-radius: 8px;
      background: #fff7f2;
      color: #d84b18;
      font: 700 12px/1 var(--sans);
      cursor: pointer;
    }
    .copy-button:hover {
      border-color: rgba(255, 91, 34, 0.4);
      background: #fff1e8;
    }
    .soft-cta {
      margin: 78px 0 0;
      padding: clamp(30px, 5vw, 54px);
      border-radius: 8px;
      background: #121722;
      color: #fff;
      font-family: var(--sans);
      box-shadow: 0 24px 70px rgba(18, 23, 34, 0.18);
    }
    .soft-cta h2 {
      margin: 0 0 16px;
      color: #fff;
    }
    .soft-cta p {
      max-width: 720px;
      color: #d6dae2;
      font-family: var(--sans);
      font-size: 16px;
      line-height: 1.68;
    }
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .button {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 0 20px;
      border-radius: 8px;
      background: #fff;
      color: #121722;
      text-decoration: none;
      font-size: 15px;
      font-weight: 800;
      transition: transform 160ms ease, opacity 160ms ease;
    }
    .button img {
      width: 22px;
      height: 22px;
      flex: 0 0 auto;
      border-radius: 50%;
    }
    .button:hover {
      transform: translateY(-1px);
      opacity: 0.92;
    }
    .button-secondary {
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: transparent;
      color: #fff;
    }
    .sources {
      margin-top: 28px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.14);
      color: #9aa3b2;
      font-size: 13px;
      line-height: 1.55;
    }
    .sources a { color: #d7deeb; }
    .article-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-top: 54px;
      padding-top: 24px;
      border-top: 1px solid var(--line);
      color: #667085;
      font-size: 13px;
      line-height: 1.5;
      font-family: var(--sans);
    }
    .article-footer a {
      color: #344054;
      font-weight: 700;
      text-decoration: none;
    }
    .article-footer a:hover { color: var(--accent); }
    .blog-motion-ready .blog-reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 520ms ease, transform 520ms cubic-bezier(0.22, 0.72, 0.24, 1);
    }
    .blog-motion-ready .blog-reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }
    @media (max-width: 680px) {
      .article-shell {
        width: calc(100% - 28px);
        padding-top: 18px;
        padding-bottom: 56px;
      }
      .hero {
        padding: 24px 18px;
      }
      .article-mark {
        margin-bottom: 18px;
      }
      .article-mark img {
        width: 102px;
      }
      h1 {
        font-size: clamp(30px, 8.2vw, 36px);
        line-height: 1.08;
      }
      .lead {
        margin-top: 16px;
        font-size: 16px;
        line-height: 1.55;
      }
      .meta-row {
        font-size: 13px;
      }
      .hero-figure img {
        height: 260px;
      }
      .article-content {
        margin-top: 46px;
      }
      .article-body {
        font-size: 17px;
        line-height: 1.72;
      }
      .article-body h2 {
        margin-top: 58px;
        font-size: 28px;
      }
      .keyword-grid {
        grid-template-columns: 1fr;
      }
      .keyword-card {
        min-height: 76px;
      }
      .article-footer {
        display: grid;
      }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .blog-motion-ready .blog-reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
      }
    }