:root {
      --brand: #0B3D91;
      --template-theme: {主题色};
      --brand-dark: #06275f;
      --brand-soft: #eaf1fb;
      --accent: #e84b3c;
      --green: #087f5b;
      --ink: #152033;
      --muted: #637089;
      --line: #dce3ec;
      --surface: #f5f7fa;
      --white: #fff;
      --shadow: 0 14px 34px rgba(25, 42, 70, .1);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      font-size: 15px;
      line-height: 1.7;
      overflow-x: hidden;
    }

    body,
    button,
    input,
    textarea,
    select {
      font-family: inherit;
    }

    img {
      display: block;
      max-width: 100%;
    }

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

    button {
      color: inherit;
    }

    .container {
      width: min(1180px, calc(100% - 40px));
      margin: 0 auto;
    }

    .topbar {
      color: #dce8fb;
      background: var(--brand-dark);
      font-size: 13px;
    }

    .topbar .container {
      min-height: 38px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .topbar-links {
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .topbar a {
      transition: color .2s ease;
    }

    .topbar a:hover {
      color: #fff;
    }

    .header {
      position: relative;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(255, 255, 255, .98);
    }

    .header-inner {
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .logo {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--brand);
      font-size: 19px;
      font-weight: 800;
      white-space: nowrap;
    }

    .logo img {
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

    .main-nav {
      align-self: stretch;
      margin-left: auto;
    }

    .nav-list {
      height: 100%;
      margin: 0;
      padding: 0;
      display: flex;
      align-items: stretch;
      list-style: none;
    }

    .nav-item {
      position: relative;
      display: flex;
      align-items: stretch;
    }

    .nav-link {
      position: relative;
      padding: 0 13px;
      display: flex;
      align-items: center;
      color: #28364b;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      right: 13px;
      bottom: 17px;
      left: 13px;
      height: 2px;
      background: var(--brand);
      transform: scaleX(0);
      transition: transform .2s ease;
    }

    .nav-link:hover::after,
    .nav-item:focus-within > .nav-link::after,
    .nav-item:hover > .nav-link::after {
      transform: scaleX(1);
    }

    .nav-link.has-arrow {
      padding-right: 25px;
    }

    .nav-link.has-arrow::before {
      content: "";
      position: absolute;
      top: 50%;
      right: 11px;
      width: 6px;
      height: 6px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: translateY(-70%) rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      z-index: 60;
      visibility: hidden;
      opacity: 0;
      border: 1px solid var(--line);
      border-top: 3px solid var(--brand);
      background: #fff;
      box-shadow: var(--shadow);
      transform: translate(-50%, 8px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
    }

    .dropdown-panel::before,
    .mega-menu::before {
      content: "";
      position: absolute;
      right: 0;
      bottom: 100%;
      left: 0;
      height: 10px;
    }

    .dropdown-panel {
      width: 320px;
      padding: 20px;
    }

    .mega-menu {
      width: min(760px, calc(100vw - 40px));
      padding: 24px;
    }

    .nav-item:hover > .dropdown-panel,
    .nav-item:hover > .mega-menu,
    .nav-item:focus-within > .dropdown-panel,
    .nav-item:focus-within > .mega-menu {
      visibility: visible;
      opacity: 1;
      transform: translate(-50%, 0);
    }

    .nav-item:nth-last-child(-n+3) .mega-menu {
      right: 0;
      left: auto;
      transform: translate(0, 8px);
    }

    .nav-item:nth-last-child(-n+3):hover > .mega-menu,
    .nav-item:nth-last-child(-n+3):focus-within > .mega-menu {
      transform: translate(0, 0);
    }

    .mega-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(220px, .65fr);
      gap: 28px;
    }

    .panel-title {
      margin: 0 0 13px;
      color: var(--brand);
      font-size: 15px;
      font-weight: 800;
    }

    .panel-list {
      display: grid;
      gap: 2px;
    }

    .panel-list a {
      padding: 8px 9px;
      border-radius: 4px;
      color: #33435b;
      font-size: 13px;
      line-height: 1.45;
      transition: color .2s ease, background .2s ease;
    }

    .panel-list a:hover {
      color: var(--brand);
      background: var(--brand-soft);
    }

    .panel-list small {
      margin-top: 3px;
      display: block;
      color: var(--muted);
    }

    .mega-cards {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
    }

    .mega-card {
      min-width: 0;
      padding: 11px;
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      align-items: center;
      gap: 5px 9px;
      border: 1px solid #e5eaf1;
      border-radius: 5px;
      background: #fff;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .mega-card:hover {
      border-color: #9db7dc;
      box-shadow: 0 6px 16px rgba(25, 51, 91, .08);
    }

    .mega-card img {
      width: 28px;
      height: 28px;
      grid-row: span 2;
      object-fit: contain;
    }

    .mega-card strong,
    .mega-card small {
      min-width: 0;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .mega-card strong {
      color: #223149;
      font-size: 13px;
      white-space: nowrap;
    }

    .mega-card small {
      display: block;
      color: var(--muted);
      font-size: 11px;
      line-height: 1.4;
    }

    .mega-footer {
      margin-top: 14px;
      padding-top: 12px;
      display: block;
      border-top: 1px solid var(--line);
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .member-btn,
    .open-btn {
      min-height: 38px;
      padding: 7px 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--brand);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .member-btn {
      color: var(--brand);
      background: #fff;
    }

    .open-btn {
      color: #fff;
      background: var(--brand);
    }

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 9px;
      display: none;
      border: 0;
      background: transparent;
      cursor: pointer;
    }

    .hamburger span {
      width: 23px;
      height: 2px;
      margin: 5px auto;
      display: block;
      background: var(--ink);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
      opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 89;
      visibility: hidden;
      opacity: 0;
      background: rgba(10, 20, 36, .56);
      transition: opacity .25s ease, visibility .25s ease;
    }

    .drawer-overlay.open {
      visibility: visible;
      opacity: 1;
    }

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 90;
      width: min(390px, 88vw);
      overflow-y: auto;
      background: #fff;
      box-shadow: -16px 0 36px rgba(11, 31, 62, .18);
      transform: translateX(105%);
      transition: transform .25s ease;
    }

    .mobile-drawer.open {
      transform: translateX(0);
    }

    .drawer-head {
      min-height: 68px;
      padding: 13px 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      background: var(--brand);
    }

    .drawer-head span {
      min-width: 0;
      margin-right: auto;
      font-weight: 700;
    }

    .drawer-head a {
      padding: 6px 11px;
      border: 1px solid rgba(255, 255, 255, .6);
      border-radius: 4px;
      font-size: 13px;
    }

    .drawer-close {
      width: 36px;
      height: 36px;
      padding: 0;
      border: 0;
      color: #fff;
      background: transparent;
      font-size: 27px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 8px 18px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 49px;
      padding: 10px 5px;
      display: flex;
      align-items: center;
      border: 0;
      border-bottom: 1px solid var(--line);
      background: transparent;
      color: #26354c;
      font-size: 15px;
      font-weight: 700;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle {
      position: relative;
    }

    .drawer-toggle::after {
      content: "+";
      margin-left: auto;
      color: var(--brand);
      font-size: 21px;
      font-weight: 400;
    }

    .drawer-toggle.active::after {
      content: "−";
    }

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: var(--surface);
      transition: max-height .3s ease;
    }

    .drawer-submenu.open {
      max-height: 720px;
    }

    .drawer-submenu a {
      padding: 10px 14px;
      display: block;
      border-bottom: 1px solid #e4e9f0;
      color: #536178;
      font-size: 13px;
    }

    .ea-content-stack {
      min-width: 0;
      background: #fff;
    }

    .ea-content-stack .product-heading-band {
      padding: 20px 0;
      border-bottom: 1px solid var(--line);
      background: var(--surface);
    }

    .ea-content-stack .breadcrumbs {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
    }

    .ea-content-stack .breadcrumbs a {
      color: var(--brand);
    }

    .ea-content-stack .product-overview {
      padding: 54px 0 60px;
      border-bottom: 1px solid var(--line);
    }

    .ea-content-stack .product-overview-grid {
      display: grid;
      grid-template-columns: minmax(300px, .9fr) minmax(0, 1.1fr);
      align-items: center;
      gap: 54px;
    }

    .ea-content-stack .product-media {
      position: relative;
      min-height: 390px;
      padding: 34px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #f7f9fc;
      overflow: hidden;
    }

    .ea-content-stack .product-media::before {
      content: "";
      position: absolute;
      top: 20px;
      left: 20px;
      width: 48px;
      height: 5px;
      background: var(--brand);
      box-shadow: 58px 0 0 var(--accent), 116px 0 0 #f0b429;
    }

    .ea-content-stack .product-media img {
      width: 100%;
      max-height: 410px;
      object-fit: contain;
    }

    .ea-content-stack .product-category {
      margin-bottom: 13px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
    }

    .ea-content-stack .product-category::before {
      content: "";
      width: 18px;
      height: 3px;
      background: var(--accent);
    }

    .ea-content-stack .product-summary h1 {
      margin: 0 0 18px;
      color: #13213a;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.18;
      letter-spacing: 0;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .product-lead {
      margin: 0 0 24px;
      color: #526078;
      font-size: 17px;
      line-height: 1.85;
    }

    .ea-content-stack .product-facts {
      margin: 0 0 28px;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      border: 1px solid var(--line);
      border-radius: 6px;
      list-style: none;
      overflow: hidden;
    }

    .ea-content-stack .product-facts li {
      min-width: 0;
      padding: 15px;
      border-right: 1px solid var(--line);
    }

    .ea-content-stack .product-facts li:last-child {
      border-right: 0;
    }

    .ea-content-stack .product-facts span,
    .ea-content-stack .product-facts strong {
      display: block;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .product-facts span {
      color: var(--muted);
      font-size: 12px;
    }

    .ea-content-stack .product-facts strong {
      margin-top: 3px;
      color: #26354c;
      font-size: 14px;
    }

    .ea-content-stack .product-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .ea-content-stack .primary-action,
    .ea-content-stack .secondary-action {
      min-height: 46px;
      padding: 10px 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--brand);
      border-radius: 4px;
      font-weight: 800;
    }

    .ea-content-stack .primary-action {
      color: #fff;
      background: var(--brand);
    }

    .ea-content-stack .secondary-action {
      color: var(--brand);
      background: #fff;
    }

    .ea-content-stack .product-detail-section {
      padding: 64px 0;
    }

    .ea-content-stack .detail-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 270px;
      align-items: start;
      gap: 42px;
    }

    .ea-content-stack .product-content {
      min-width: 0;
      max-width: 100%;
      overflow-x: auto;
    }

    .ea-content-stack .section-kicker {
      margin: 0 0 6px;
      color: var(--accent);
      font-size: 12px;
      font-weight: 800;
    }

    .ea-content-stack .section-title {
      margin: 0 0 24px;
      color: #17253d;
      font-size: 28px;
      line-height: 1.3;
      letter-spacing: 0;
    }

    .ea-content-stack .product-body {
      min-width: 0;
      max-width: 100%;
      overflow-x: auto;
      color: #37465d;
      font-size: 16px;
      line-height: 1.9;
    }

    .ea-content-stack .product-body img,
    .ea-content-stack .product-body video,
    .ea-content-stack .product-body iframe,
    .ea-content-stack .product-body table {
      max-width: 100%;
    }

    .ea-content-stack .product-body img {
      height: auto;
    }

    .ea-content-stack .product-body table {
      width: 100%;
      border-collapse: collapse;
    }

    .ea-content-stack .product-body th,
    .ea-content-stack .product-body td {
      padding: 10px;
      border: 1px solid var(--line);
    }

    .ea-content-stack .detail-aside {
      position: sticky;
      top: 24px;
      border-top: 4px solid var(--brand);
      background: var(--surface);
    }

    .ea-content-stack .aside-block {
      padding: 22px;
      border-right: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      border-left: 1px solid var(--line);
    }

    .ea-content-stack .aside-block h2 {
      margin: 0 0 14px;
      color: #1d2c43;
      font-size: 17px;
    }

    .ea-content-stack .aside-row {
      padding: 10px 0;
      display: flex;
      justify-content: space-between;
      gap: 14px;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 13px;
    }

    .ea-content-stack .aside-row:last-child {
      border-bottom: 0;
    }

    .ea-content-stack .aside-row strong {
      color: #26354c;
      text-align: right;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .related-products {
      padding: 60px 0 72px;
      border-top: 1px solid var(--line);
      background: var(--surface);
    }

    .ea-content-stack .related-head {
      margin-bottom: 24px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
    }

    .ea-content-stack .related-head .section-title {
      margin-bottom: 0;
    }

    .ea-content-stack .related-head p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .ea-content-stack .related-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 20px;
    }

    .ea-content-stack .related-card {
      min-width: 0;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--line);
      border-radius: 7px;
      background: #fff;
      overflow: hidden;
      transition: transform .2s ease, box-shadow .2s ease;
    }

    .ea-content-stack .related-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow);
    }

    .ea-content-stack .related-image {
      aspect-ratio: 16 / 9;
      padding: 18px;
      display: grid;
      place-items: center;
      border-bottom: 1px solid var(--line);
      background: #f8fafc;
    }

    .ea-content-stack .related-image img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .ea-content-stack .related-copy {
      min-width: 0;
      padding: 19px;
      display: flex;
      flex: 1;
      flex-direction: column;
    }

    .ea-content-stack .related-copy h3 {
      margin: 0 0 9px;
      color: #1e2d45;
      font-size: 17px;
      line-height: 1.45;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .related-copy p {
      margin: 0 0 17px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .ea-content-stack .related-meta {
      margin-top: auto;
      padding-top: 12px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      border-top: 1px solid var(--line);
      color: #748096;
      font-size: 12px;
    }

    .footer {
      padding: 58px 0 0;
      color: #c8d3e4;
      background: #101a2a;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1.15fr;
      gap: 42px;
    }

    .footer h3 {
      margin: 0 0 16px;
      color: #fff;
      font-size: 15px;
    }

    .footer a,
    .footer p {
      color: #aebbd0;
      font-size: 13px;
    }

    .footer a {
      width: fit-content;
      margin-bottom: 9px;
      display: block;
      transition: color .2s ease;
    }

    .footer a:hover {
      color: #fff;
    }

    .footer p {
      margin: 9px 0;
    }

    .footer-brand strong {
      color: #fff;
      font-size: 21px;
    }

    .footer-bottom {
      margin-top: 42px;
      padding: 18px 0;
      display: flex;
      justify-content: space-between;
      gap: 24px;
      border-top: 1px solid rgba(255, 255, 255, .12);
      color: #8f9db2;
      font-size: 12px;
    }

    @media (max-width: 1080px) {
      .main-nav {
        display: none;
      }

      .hamburger {
        display: block;
      }

      .header-btns {
        margin-left: auto;
      }

      .ea-content-stack .product-overview-grid {
        gap: 34px;
      }
    }

    @media (max-width: 820px) {
      .container {
        width: min(100% - 28px, 1180px);
      }

      .topbar .container {
        padding: 8px 0;
        align-items: flex-start;
      }

      .topbar-links {
        align-items: flex-end;
        flex-direction: column;
        gap: 1px;
      }

      .header-inner {
        min-height: 68px;
        gap: 12px;
      }

      .logo span {
        max-width: 180px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .ea-content-stack .product-overview {
        padding: 36px 0 44px;
      }

      .ea-content-stack .product-overview-grid,
      .ea-content-stack .detail-layout {
        grid-template-columns: 1fr;
      }

      .ea-content-stack .product-media {
        min-height: 300px;
      }

      .ea-content-stack .detail-aside {
        position: static;
      }

      .ea-content-stack .related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
      }
    }

    @media (max-width: 560px) {
      .topbar .container {
        display: block;
      }

      .topbar-links {
        margin-top: 4px;
        align-items: flex-start;
      }

      .logo {
        font-size: 16px;
      }

      .logo img {
        width: 36px;
        height: 36px;
      }

      .member-btn {
        display: none;
      }

      .open-btn {
        min-height: 36px;
        padding: 6px 11px;
      }

      .ea-content-stack .product-summary h1 {
        font-size: 31px;
      }

      .ea-content-stack .product-media {
        min-height: 250px;
        padding: 28px 20px;
      }

      .ea-content-stack .product-facts {
        grid-template-columns: 1fr;
      }

      .ea-content-stack .product-facts li {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .ea-content-stack .product-facts li:last-child {
        border-bottom: 0;
      }

      .ea-content-stack .product-actions a {
        width: 100%;
      }

      .ea-content-stack .product-detail-section,
      .ea-content-stack .related-products {
        padding: 46px 0;
      }

      .ea-content-stack .related-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
      }

      .ea-content-stack .related-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-grid {
        gap: 28px;
      }
    }