:root {
      --theme: #0B3D91;
      --template-theme: {主题色};
      --theme-dark: #072b68;
      --accent: #f97316;
      --ink: #172033;
      --muted: #657085;
      --line: #dce2ea;
      --surface: #f5f7fa;
      --white: #fff;
      --success: #16835b;
      --shadow: 0 12px 32px rgba(11, 61, 145, .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;
      line-height: 1.65;
      overflow-x: hidden;
    }

    body,
    button,
    input {
      font-size: 15px;
    }

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

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

    button {
      font-family: inherit;
    }

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

    .topbar {
      color: #e8eef9;
      background: #10213b;
      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: 24px;
    }

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

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

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .logo {
      min-width: 150px;
      max-width: 220px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 19px;
      font-weight: 800;
    }

    .logo img {
      width: 38px;
      height: 38px;
      object-fit: contain;
    }

    .logo span {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .main-nav {
      align-self: stretch;
      flex: 1;
    }

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

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

    .nav-link {
      padding: 0 14px;
      display: flex;
      align-items: center;
      color: #263248;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link:hover,
    .nav-item:focus-within > .nav-link {
      color: var(--theme);
    }

    .has-arrow::after {
      width: 6px;
      height: 6px;
      margin: -4px 0 0 8px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      content: "";
      transform: rotate(45deg);
    }

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

    .dropdown-panel::before,
    .mega-menu::before {
      position: absolute;
      right: 0;
      bottom: 100%;
      left: 0;
      height: 12px;
      content: "";
    }

    .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);
    }

    .dropdown-panel {
      width: 290px;
      padding: 10px;
    }

    .dropdown-panel a {
      padding: 10px 12px;
      display: block;
      border-radius: 4px;
      color: #354157;
    }

    .dropdown-panel a:hover {
      color: var(--theme);
      background: #eef4ff;
    }

    .mega-menu {
      width: min(820px, 92vw);
      padding: 22px;
    }

    .nav-item:nth-last-child(-n+3) .mega-menu {
      left: auto;
      right: -80px;
      transform: translateY(8px);
    }

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

    .mega-title {
      margin-bottom: 13px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      color: var(--ink);
      font-weight: 800;
    }

    .mega-title a {
      color: var(--theme);
      font-size: 13px;
      font-weight: 700;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
    }

    .mega-card {
      min-width: 0;
      padding: 13px;
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 4px 9px;
      border: 1px solid #e3e8ef;
      border-radius: 6px;
      background: #fbfcfe;
    }

    .mega-card:hover {
      border-color: #9db6dd;
      background: #f1f6ff;
    }

    .mega-card img {
      width: 30px;
      height: 30px;
      grid-row: 1 / span 2;
      object-fit: contain;
    }

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

    .mega-card strong {
      color: #263248;
      white-space: nowrap;
    }

    .mega-card small {
      color: var(--muted);
      font-size: 12px;
    }

    .mega-footer {
      margin-top: 16px;
      padding-top: 13px;
      display: block;
      color: var(--theme);
      border-top: 1px solid var(--line);
      font-weight: 800;
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 9px;
      white-space: nowrap;
    }

    .member-link {
      color: var(--theme);
      font-weight: 700;
    }

    .open-account {
      padding: 9px 15px;
      color: #fff;
      background: var(--theme);
      border-radius: 5px;
      font-weight: 800;
    }

    .open-account:hover {
      background: var(--theme-dark);
    }

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 9px;
      display: none;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      border: 1px solid var(--line);
      border-radius: 5px;
      background: #fff;
      cursor: pointer;
    }

    .hamburger span {
      width: 21px;
      height: 2px;
      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: 90;
      visibility: hidden;
      opacity: 0;
      background: rgba(10, 17, 30, .56);
      transition: opacity .2s ease, visibility .2s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 100;
      width: min(390px, 90vw);
      overflow-y: auto;
      background: #fff;
      box-shadow: -16px 0 40px rgba(0, 0, 0, .18);
      transform: translateX(105%);
      transition: transform .24s ease;
    }

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

    .drawer-head {
      min-height: 72px;
      padding: 15px 18px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      background: var(--theme);
    }

    .drawer-head strong {
      min-width: 0;
      margin-right: auto;
    }

    .drawer-head a {
      padding: 7px 12px;
      color: var(--theme);
      background: #fff;
      border-radius: 4px;
      font-weight: 800;
    }

    .drawer-close {
      width: 34px;
      height: 34px;
      color: #fff;
      border: 0;
      background: transparent;
      font-size: 28px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 12px 18px 30px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      padding: 14px 4px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #243048;
      border: 0;
      border-bottom: 1px solid var(--line);
      background: transparent;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle::after {
      content: "+";
      color: var(--theme);
      font-size: 20px;
    }

    .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;
      color: #536078;
      border-bottom: 1px solid #e5e9ef;
    }

    .ea-content-stack {
      min-width: 0;
      background: var(--surface);
    }

    .ea-content-stack .product-breadcrumb {
      padding: 18px 0;
      color: var(--muted);
      font-size: 14px;
    }

    .ea-content-stack .product-breadcrumb a {
      color: var(--theme);
    }

    .ea-content-stack .product-overview {
      padding: 34px;
      display: grid;
      grid-template-columns: minmax(300px, 42%) minmax(0, 1fr);
      gap: 42px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: 0 8px 26px rgba(23, 32, 51, .06);
    }

    .ea-content-stack .product-media {
      min-width: 0;
      min-height: 360px;
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #eef2f7;
      border: 1px solid #dfe5ec;
      border-radius: 6px;
    }

    .ea-content-stack .product-media img {
      width: 100%;
      max-height: 420px;
      object-fit: contain;
    }

    .ea-content-stack .product-category {
      margin-bottom: 12px;
      display: inline-flex;
      padding: 5px 10px;
      color: var(--theme);
      background: #eaf1fc;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .ea-content-stack .product-summary h1 {
      margin: 0 0 15px;
      color: #15213a;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.2;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .product-lead {
      margin: 0 0 24px;
      color: #546075;
      font-size: 17px;
    }

    .ea-content-stack .product-facts {
      margin: 0 0 25px;
      padding: 0;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      border-top: 1px solid var(--line);
      list-style: none;
    }

    .ea-content-stack .product-facts li {
      min-width: 0;
      padding: 13px 8px 13px 0;
      border-bottom: 1px solid var(--line);
    }

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

    .ea-content-stack .product-facts strong {
      color: #263248;
      overflow-wrap: anywhere;
    }

    .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: 11px 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 5px;
      font-weight: 800;
    }

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

    .ea-content-stack .primary-action:hover {
      background: #d95d0b;
    }

    .ea-content-stack .secondary-action {
      color: var(--theme);
      border: 1px solid var(--theme);
      background: #fff;
    }

    .ea-content-stack .product-layout {
      padding: 34px 0 60px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      align-items: start;
      gap: 28px;
    }

    .ea-content-stack .product-content,
    .ea-content-stack .product-sidebar {
      min-width: 0;
    }

    .ea-content-stack .content-panel,
    .ea-content-stack .side-panel {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 8px;
    }

    .ea-content-stack .content-panel {
      padding: 34px;
    }

    .ea-content-stack .section-heading {
      margin: 0 0 22px;
      padding-bottom: 13px;
      color: #17233d;
      border-bottom: 2px solid var(--theme);
      font-size: 23px;
      line-height: 1.35;
    }

    .ea-content-stack .product-body {
      min-width: 0;
      max-width: 100%;
      overflow-x: auto;
      color: #354157;
      overflow-wrap: anywhere;
    }

    .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 .product-notice {
      margin-top: 28px;
      padding: 15px 17px;
      color: #704019;
      background: #fff6ed;
      border-left: 4px solid var(--accent);
    }

    .ea-content-stack .side-panel {
      padding: 22px;
      position: sticky;
      top: 20px;
    }

    .ea-content-stack .side-panel h2 {
      margin: 0 0 15px;
      color: #17233d;
      font-size: 19px;
    }

    .ea-content-stack .side-panel p {
      color: var(--muted);
    }

    .ea-content-stack .side-link {
      margin-top: 8px;
      padding: 10px 12px;
      display: block;
      color: var(--theme);
      background: #eef4ff;
      border-radius: 5px;
      font-weight: 800;
    }

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

    .ea-content-stack .related-head {
      margin-bottom: 20px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 18px;
    }

    .ea-content-stack .related-head h2 {
      margin: 0;
      color: #17233d;
      font-size: 26px;
    }

    .ea-content-stack .related-head span {
      color: var(--muted);
    }

    .ea-content-stack .related-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .ea-content-stack .related-card {
      min-width: 0;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 7px;
      transition: transform .18s ease, box-shadow .18s ease;
    }

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

    .ea-content-stack .related-card img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      background: #edf1f6;
    }

    .ea-content-stack .related-card-body {
      padding: 18px;
    }

    .ea-content-stack .related-card h3 {
      margin: 0 0 8px;
      color: #1d2941;
      font-size: 18px;
      line-height: 1.4;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .related-card p {
      margin: 0 0 12px;
      color: var(--muted);
      display: -webkit-box;
      overflow: hidden;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
    }

    .ea-content-stack .related-meta {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: #788397;
      font-size: 12px;
    }

    .footer {
      padding: 52px 0 0;
      color: #cbd4e3;
      background: #101b2d;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
      gap: 42px;
    }

    .footer-brand {
      margin-bottom: 13px;
      color: #fff;
      font-size: 22px;
      font-weight: 800;
    }

    .footer p {
      margin: 7px 0;
      color: #aab6c8;
    }

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

    .footer a {
      margin: 8px 0;
      display: block;
      color: #bdc8d9;
    }

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

    .footer-bottom {
      margin-top: 38px;
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      gap: 20px;
      color: #98a6bb;
      border-top: 1px solid rgba(255, 255, 255, .12);
      font-size: 13px;
    }

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

      .hamburger {
        display: flex;
      }

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

      .ea-content-stack .product-layout {
        grid-template-columns: minmax(0, 1fr) 260px;
      }
    }

    @media (max-width: 820px) {
      .topbar .container,
      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
      }

      .topbar .container {
        padding: 8px 0;
        gap: 4px;
      }

      .topbar-links {
        flex-wrap: wrap;
        gap: 4px 16px;
      }

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

      .ea-content-stack .product-overview {
        gap: 25px;
      }

      .ea-content-stack .product-media {
        min-height: 280px;
      }

      .ea-content-stack .side-panel {
        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));
      }
    }

    @media (max-width: 560px) {
      .container {
        width: min(100% - 24px, 1180px);
      }

      .header-inner {
        min-height: 66px;
        gap: 10px;
      }

      .logo {
        min-width: 0;
        max-width: calc(100% - 136px);
        font-size: 16px;
      }

      .logo img {
        width: 34px;
        height: 34px;
      }

      .member-link {
        display: none;
      }

      .open-account {
        padding: 8px 11px;
      }

      .ea-content-stack .product-overview,
      .ea-content-stack .content-panel {
        padding: 20px;
      }

      .ea-content-stack .product-media {
        min-height: 220px;
        padding: 15px;
      }

      .ea-content-stack .product-summary h1 {
        font-size: 28px;
      }

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

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

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

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