:root {
      --blue: #0477f1;
      --deep-blue: #3c5cb3;
      --ink: #111;
      --soft: #f9fafc;
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      min-width: 0;
      overflow-x: hidden;
      background: var(--soft);
      color: var(--ink);
      font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .site-page {
      position: relative;
      overflow: hidden;
      background: #f9fafc;
    }

    .topbar {
      position: fixed;
      inset: 0 0 auto 0;
      z-index: 50;
      height: 100px;
      border-bottom: 1px solid rgba(255, 255, 255, .3);
      background: rgba(5, 15, 38, .58);
      backdrop-filter: blur(10px);
      transition: background .28s ease, border-color .28s ease, box-shadow .28s ease;
    }

    .topbar.is-light {
      border-bottom-color: rgba(26, 56, 120, .08);
      background: rgba(255, 255, 255, .96);
      box-shadow: 0 8px 24px rgba(20, 42, 78, .08);
      backdrop-filter: blur(12px);
    }

    .topbar-inner {
      height: 100%;
      display: flex;
      align-items: center;
      padding: 0 60px;
      gap: 120px;
    }

    .logo-wrap {
      position: relative;
      width: 290px;
      height: 29px;
      flex: 0 0 auto;
    }

    .logo {
      position: absolute;
      inset: 0;
      width: 290px;
      height: 29px;
      object-fit: contain;
      transition: opacity .24s ease;
    }

    .logo-blue { opacity: 0; }
    .topbar.is-light .logo-white { opacity: 0; }
    .topbar.is-light .logo-blue { opacity: 1; }

    .nav {
      display: flex;
      align-items: center;
      gap: 60px;
      margin-left: 8px;
    }

    .nav a,
    .header-links a {
      position: relative;
      color: #fff;
      text-decoration: none;
      transition: color .22s ease, transform .22s ease;
    }

    .topbar.is-light .nav a,
    .topbar.is-light .header-links a { color: #111; }

    .nav a {
      font-size: 24px;
      line-height: 38.4px;
      white-space: nowrap;
    }

    .nav-deepvision { font-weight: 700; }

    .nav a.active { color: var(--blue); }
    .topbar.is-light .nav a.active,
    .topbar.is-light .header-links a:first-child { color: var(--deep-blue); }

    .nav a.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: -28px;
      width: 111px;
      height: 3px;
      background: var(--blue);
      transform: translateX(-50%);
    }

    .topbar.is-light .nav a.active::after {
      bottom: -31px;
      background: var(--deep-blue);
    }

    .nav a:hover,
    .header-links a:hover {
      color: #58a7ff;
      transform: translateY(-1px);
    }

    .header-links {
      margin-left: auto;
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .header-links a {
      font-size: 16px;
      line-height: 25.6px;
      white-space: nowrap;
    }

    .header-links a:first-child {
      color: var(--blue);
      font-weight: 500;
    }

    .detail-main {
      padding-top: 100px;
      background: #f9f9fa;
    }

    .detail-heading {
      border-bottom: 1px solid #eee;
      background: #fff;
      padding: 24px 50px 31px;
    }

    .detail-heading-inner {
      max-width: 1920px;
      margin: 0 auto;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #888;
      font-size: 20px;
      line-height: 32px;
      font-weight: 400;
      white-space: nowrap;
    }

    .breadcrumb a {
      color: #888;
      transition: color .2s ease;
    }

    .breadcrumb a:hover {
      color: var(--deep-blue);
    }

    .detail-title {
      margin: 20px 0 0;
      color: #111;
      font-size: 40px;
      line-height: 56px;
      font-weight: 700;
      white-space: nowrap;
    }

    .detail-meta {
      display: flex;
      align-items: center;
      gap: 24px;
      margin-top: 16px;
      color: #666;
      font-size: 20px;
      line-height: 32px;
    }

    .detail-meta span {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      white-space: nowrap;
    }

    .detail-meta img {
      width: 20px;
      height: 20px;
      display: block;
      object-fit: contain;
    }

    .detail-content {
      padding: 40px 50px 80px;
    }

    .detail-card {
      max-width: 1805px;
      margin: 0 auto;
      padding: 50px;
      border-radius: 12px;
      background: #fff;
      box-shadow: 0 4px 8px rgba(0, 0, 0, .04);
    }

    .article-media {
      width: min(1200px, 100%);
      margin: 88px auto 0;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(0, 0, 0, .06);
    }

    .article-media img {
      display: block;
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .article-copy {
      max-width: 1600px;
      margin: 0 auto;
      color: #000;
      font-size: 20px;
      line-height: 38px;
      font-weight: 400;
      text-align: justify;
      overflow-wrap: anywhere;
      word-break: break-word;
      white-space: normal;
      text-wrap: wrap;
    }

    .detail-divider {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid #eee;
    }

    .detail-pager {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 20px;
    }

    .pager-card,
    .pager-link {
      min-height: 114px;
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 21px;
      border: 1px solid transparent;
      border-radius: 10px;
      background: #f8fafc;
      color: inherit;
      text-decoration: none;
      transition: border-color .22s ease, background .22s ease, transform .22s ease;
    }

    .pager-card:hover,
    .pager-card:focus-visible,
    .pager-link:hover,
    .pager-link:focus-visible {
      border-color: #3c5cb3;
      background: #fff;
      transform: translateY(-2px);
    }

    .pager-card.next {
      gap: 30px;
      justify-content: space-between;
    }

    .pager-icon {
      width: 60px;
      height: 60px;
      flex: 0 0 auto;
      display: block;
    }

    .pager-text,
    .pager-link span {
      min-width: 0;
      flex: 1 1 auto;
    }

    .pager-text small,
    .pager-link small {
      display: block;
      color: #888;
      font-size: 20px;
      line-height: 32px;
      font-weight: 400;
    }

    .pager-text strong,
    .pager-link strong {
      display: block;
      margin-top: 4px;
      overflow: hidden;
      color: #333;
      font-size: 24px;
      line-height: 36px;
      font-weight: 500;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

        @media (max-width: 1840px) {
      .topbar-inner {
        padding: 0 40px;
        gap: 70px;
      }

      .logo-wrap,
      .logo {
        width: 250px;
        height: 25px;
      }

      .nav { gap: 36px; }
      .nav a { font-size: 21px; }

      .footer-inner {
        width: calc(100% - 64px);
        grid-template-columns: 260px repeat(4, 1fr) 170px;
        gap: 28px;
      }
    }


    @media (max-width: 1500px) {
      .topbar-inner {
        padding: 0 28px;
        gap: 34px;
      }

      .nav {
        gap: 24px;
        margin-left: 0;
      }

      .nav a {
        font-size: 18px;
        line-height: 30px;
      }

      .nav a.active::after {
        width: 86px;
        bottom: -32px;
      }

      .header-links { display: none; }

      .detail-title {
        font-size: 34px;
        line-height: 48px;
        white-space: normal;
      }

      .detail-card {
        padding: 42px;
      }

      .article-media {
        margin-top: 64px;
      }
    }


    @media (max-width: 1280px) {
      .topbar { height: 84px; }

      .detail-main { padding-top: 84px; }

      .logo-wrap,
      .logo {
        width: 220px;
        height: 22px;
      }

      .topbar-inner {
        padding: 0 22px;
        gap: 24px;
      }

      .nav {
        flex: 1 1 auto;
        justify-content: space-between;
        gap: 14px;
      }

      .nav a {
        font-size: 16px;
      }

      .nav a.active::after,
      .topbar.is-light .nav a.active::after {
        bottom: -27px;
      }

      .footer-inner {
        grid-template-columns: 250px repeat(3, 1fr);
      }

      .qr {
        grid-column: 1 / 2;
      }
    }


    @media (max-width: 900px) {
      .topbar { height: 72px; }

      .detail-main { padding-top: 72px; }

      .topbar-inner {
        padding: 0 16px;
        gap: 16px;
      }

      .logo-wrap,
      .logo {
        width: 190px;
        height: 19px;
      }

      .nav {
        justify-content: flex-start;
        overflow-x: auto;
        scrollbar-width: none;
      }

      .nav::-webkit-scrollbar { display: none; }

      .nav a {
        font-size: 15px;
        line-height: 24px;
      }

      .nav a.active::after { bottom: -25px; }

      .detail-heading,
      .detail-content {
        padding-left: 24px;
        padding-right: 24px;
      }

      .breadcrumb,
      .detail-meta {
        flex-wrap: wrap;
        white-space: normal;
        font-size: 16px;
      }

      .detail-title {
        font-size: 28px;
        line-height: 42px;
      }

      .detail-card {
        padding: 28px 22px;
      }

      .article-media {
        margin-top: 36px;
      }

      .article-copy {
        font-size: 17px;
        line-height: 32px;
      }

      .detail-pager {
        grid-template-columns: 1fr;
      }

      .pager-text strong,
      .pager-link strong {
        font-size: 20px;
        line-height: 32px;
      }

      .footer {
        padding: 48px 0 34px;
      }

      .footer-inner {
        width: calc(100% - 32px);
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 26px 20px;
      }

      .footer-logo,
      .qr {
        grid-column: 1 / -1;
      }
    }