:root {
      --theme: #0B3D91;
      --template-theme: {主题色};
      --theme-dark: #072c69;
      --theme-soft: #edf4ff;
      --cyan: #06b6d4;
      --ink: #132238;
      --muted: #607086;
      --line: #dce4ef;
      --surface: #ffffff;
      --page: #f5f7fa;
      --success: #087f5b;
      --shadow: 0 14px 34px rgba(11, 61, 145, .1);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--page);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      line-height: 1.65;
    }

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

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

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

    button {
      color: inherit;
    }

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

    .topbar {
      color: #dce9ff;
      background: var(--theme-dark);
      font-size: 13px;
    }

    .topbar-inner {
      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: 78px;
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .logo {
      min-width: 190px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 18px;
      font-weight: 800;
    }

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

    .logo-mark {
      width: 38px;
      height: 38px;
      display: none;
      place-items: center;
      color: #fff;
      background: var(--theme);
      border-radius: 6px;
      font-size: 12px;
    }

    .logo img[style*="display: none"] + .logo-mark {
      display: grid;
    }

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

    .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 13px;
      display: flex;
      align-items: center;
      gap: 6px;
      color: #26364c;
      font-size: 15px;
      font-weight: 600;
      white-space: nowrap;
    }

    .nav-link:not(.simple)::after {
      width: 6px;
      height: 6px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      content: "";
      transform: rotate(45deg) translateY(-2px);
    }

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

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

    .dropdown-panel {
      width: 300px;
      padding: 22px;
    }

    .mega-menu {
      width: min(720px, 82vw);
      padding: 24px;
    }

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

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

    .mega-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(210px, .65fr);
      gap: 28px;
    }

    .mega-block {
      min-width: 0;
    }

    .menu-heading {
      margin: 0 0 14px;
      color: var(--theme);
      font-size: 15px;
    }

    .menu-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .menu-list li + li {
      border-top: 1px solid #edf1f6;
    }

    .menu-list a {
      min-height: 40px;
      padding: 8px 2px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: #45556c;
      font-size: 14px;
    }

    .menu-list a:hover {
      color: var(--theme);
    }

    .menu-list img {
      width: 24px;
      height: 24px;
      object-fit: contain;
    }

    .broker-mega-card,
    .video-mega-card {
      padding: 9px 0;
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #edf1f6;
    }

    .broker-mega-card:first-of-type,
    .video-mega-card:first-of-type {
      border-top: 0;
    }

    .broker-mega-card img {
      width: 44px;
      height: 44px;
      padding: 4px;
      object-fit: contain;
      background: #f7f9fc;
      border: 1px solid var(--line);
      border-radius: 5px;
    }

    .video-mega-card img {
      width: 74px;
      height: 46px;
      object-fit: cover;
      border-radius: 4px;
    }

    .broker-mega-card span,
    .video-mega-card span {
      min-width: 0;
      display: grid;
    }

    .mega-title {
      overflow: hidden;
      color: #22324a;
      font-size: 14px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mega-meta {
      overflow: hidden;
      color: var(--muted);
      font-size: 12px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .header-btns {
      display: flex;
      align-items: center;
      gap: 10px;
      white-space: nowrap;
    }

    .header-btns > span {
      color: var(--theme);
      font-size: 14px;
      font-weight: 700;
    }

    .account-link {
      min-height: 38px;
      padding: 7px 17px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: var(--theme);
      border-radius: 5px;
      font-size: 14px;
      font-weight: 700;
    }

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

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 9px;
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      border-radius: 5px;
      cursor: pointer;
    }

    .hamburger span {
      width: 22px;
      height: 2px;
      margin: 4px auto;
      display: block;
      background: var(--theme);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }

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

    .hamburger.active span:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 80;
      visibility: hidden;
      opacity: 0;
      background: rgba(7, 22, 43, .55);
      transition: opacity .22s ease, visibility .22s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 90;
      width: min(390px, 90vw);
      overflow-y: auto;
      background: #fff;
      box-shadow: -18px 0 45px rgba(5, 22, 52, .18);
      transform: translateX(105%);
      transition: transform .24s ease;
    }

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

    .drawer-head {
      min-height: 70px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 14px;
      color: #fff;
      background: var(--theme);
    }

    .drawer-head > a {
      padding: 6px 12px;
      border: 1px solid rgba(255, 255, 255, .5);
      border-radius: 4px;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      padding: 0;
      color: #fff;
      background: transparent;
      border: 0;
      font-size: 30px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 10px 18px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 50px;
      padding: 12px 4px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #26364c;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      text-align: left;
      font-weight: 700;
      cursor: pointer;
    }

    .drawer-toggle::after {
      content: "+";
      color: var(--theme);
      font-size: 21px;
    }

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

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: #f6f9fd;
      transition: max-height .25s ease;
    }

    .drawer-submenu.open {
      max-height: 520px;
    }

    .drawer-submenu a {
      padding: 10px 16px;
      display: block;
      color: #52637a;
      border-bottom: 1px solid #e9eef5;
      font-size: 14px;
    }

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

    .ea-content-stack .product-breadcrumb-band {
      background: #fff;
      border-bottom: 1px solid var(--line);
    }

    .ea-content-stack .breadcrumbs {
      min-height: 48px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      color: var(--muted);
      font-size: 13px;
    }

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

    .ea-content-stack .product-overview {
      padding: 54px 0;
      background:
        linear-gradient(180deg, rgba(237, 244, 255, .9), rgba(245, 247, 250, .96)),
        linear-gradient(90deg, var(--theme), var(--cyan));
    }

    .ea-content-stack .overview-grid {
      display: grid;
      grid-template-columns: minmax(280px, 430px) minmax(0, 1fr);
      gap: 54px;
      align-items: center;
    }

    .ea-content-stack .product-image-panel {
      min-width: 0;
      padding: 32px;
      background: #fff;
      border: 1px solid rgba(11, 61, 145, .14);
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .ea-content-stack .product-image-panel img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: contain;
    }

    .ea-content-stack .product-summary-panel {
      min-width: 0;
    }

    .ea-content-stack .category-label {
      margin-bottom: 15px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--theme);
      font-size: 14px;
      font-weight: 800;
    }

    .ea-content-stack .category-label::before {
      width: 22px;
      height: 3px;
      content: "";
      background: var(--cyan);
    }

    .ea-content-stack .product-summary-panel h1 {
      margin: 0;
      overflow-wrap: anywhere;
      color: #0b2448;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.2;
      letter-spacing: 0;
    }

    .ea-content-stack .product-lead {
      margin: 20px 0 0;
      color: #4f6076;
      font-size: 17px;
    }

    .ea-content-stack .product-facts {
      margin: 28px 0;
      padding: 18px 0;
      display: flex;
      flex-wrap: wrap;
      gap: 16px 34px;
      border-top: 1px solid rgba(11, 61, 145, .15);
      border-bottom: 1px solid rgba(11, 61, 145, .15);
    }

    .ea-content-stack .fact {
      display: grid;
      gap: 2px;
    }

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

    .ea-content-stack .fact strong {
      color: #23344b;
      font-size: 15px;
    }

    .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 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 5px;
      font-weight: 800;
    }

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

    .ea-content-stack .primary-action:hover {
      background: var(--theme-dark);
    }

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

    .ea-content-stack .product-content-section {
      padding: 64px 0 72px;
    }

    .ea-content-stack .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 280px;
      gap: 34px;
      align-items: start;
    }

    .ea-content-stack .product-body {
      min-width: 0;
      max-width: 100%;
      padding: 34px;
      overflow-x: auto;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 7px;
    }

    .ea-content-stack .product-body-header {
      margin-bottom: 28px;
      padding-bottom: 18px;
      border-bottom: 1px solid var(--line);
    }

    .ea-content-stack .product-body-header h2,
    .ea-content-stack .related-heading {
      margin: 0;
      color: #152c4e;
      font-size: 25px;
      letter-spacing: 0;
    }

    .ea-content-stack .product-body-header p {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .ea-content-stack .product-content {
      min-width: 0;
      max-width: 100%;
      overflow-x: auto;
      color: #33445a;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .product-content h2,
    .ea-content-stack .product-content h3,
    .ea-content-stack .product-content h4 {
      color: #172f53;
      line-height: 1.35;
      letter-spacing: 0;
    }

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

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

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

    .ea-content-stack .product-content pre,
    .ea-content-stack .product-content code {
      max-width: 100%;
      white-space: pre-wrap;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .product-sidebar {
      display: grid;
      gap: 20px;
    }

    .ea-content-stack .side-panel {
      padding: 23px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 7px;
    }

    .ea-content-stack .side-panel h2 {
      margin: 0 0 15px;
      color: #18345c;
      font-size: 18px;
    }

    .ea-content-stack .side-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .ea-content-stack .side-list li {
      padding: 11px 0;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      border-top: 1px solid #edf1f6;
      color: var(--muted);
      font-size: 14px;
    }

    .ea-content-stack .side-list li:first-child {
      border-top: 0;
    }

    .ea-content-stack .side-list strong {
      color: #26384f;
      text-align: right;
      overflow-wrap: anywhere;
    }

    .ea-content-stack .notice-panel {
      color: #dfeaff;
      background: var(--theme);
      border-color: var(--theme);
    }

    .ea-content-stack .notice-panel h2 {
      color: #fff;
    }

    .ea-content-stack .notice-panel p {
      margin: 0 0 16px;
      font-size: 14px;
    }

    .ea-content-stack .notice-panel a {
      width: 100%;
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--theme);
      background: #fff;
      border-radius: 4px;
      font-weight: 800;
    }

    .ea-content-stack .related-products {
      padding: 0 0 76px;
    }

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

    .ea-content-stack .related-head p {
      margin: 5px 0 0;
      color: var(--muted);
    }

    .ea-content-stack .related-head > a {
      color: var(--theme);
      font-weight: 800;
    }

    .ea-content-stack .related-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 22px;
    }

    .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 / 9;
      object-fit: contain;
      background: #eef3fa;
    }

    .ea-content-stack .related-card-body {
      padding: 19px;
    }

    .ea-content-stack .related-card h3 {
      margin: 0;
      overflow-wrap: anywhere;
      color: #1b3152;
      font-size: 18px;
      line-height: 1.4;
    }

    .ea-content-stack .related-card p {
      min-height: 3.2em;
      margin: 9px 0 14px;
      display: -webkit-box;
      overflow: hidden;
      color: var(--muted);
      font-size: 14px;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .ea-content-stack .related-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: #718096;
      font-size: 12px;
    }

    .ea-content-stack .related-meta strong {
      color: var(--theme);
    }

    .footer {
      color: #cbd8e9;
      background: #0d1d32;
    }

    .footer-main {
      padding: 54px 0 42px;
      display: grid;
      grid-template-columns: 1.35fr 1fr 1fr 1fr;
      gap: 42px;
    }

    .footer-brand > span {
      color: #fff;
      font-size: 21px;
      font-weight: 800;
    }

    .footer-brand p {
      max-width: 320px;
      margin: 14px 0 0;
      color: #aebdd0;
      font-size: 14px;
    }

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

    .footer-links {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-links li + li {
      margin-top: 8px;
    }

    .footer-links a,
    .footer-contact a {
      color: #b9c7d9;
      font-size: 14px;
    }

    .footer-links a:hover,
    .footer-contact a:hover {
      color: #fff;
    }

    .footer-contact {
      display: grid;
      gap: 9px;
      color: #b9c7d9;
      font-size: 14px;
      overflow-wrap: anywhere;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .1);
    }

    .footer-bottom-inner {
      min-height: 62px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      color: #93a4ba;
      font-size: 13px;
    }

    @media (max-width: 1100px) {
      .main-nav {
        display: none;
      }

      .hamburger {
        display: block;
      }

      .header-inner {
        justify-content: space-between;
      }

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

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

    @media (max-width: 900px) {
      .ea-content-stack .overview-grid,
      .ea-content-stack .content-layout {
        grid-template-columns: 1fr;
      }

      .ea-content-stack .product-image-panel {
        width: min(100%, 520px);
        margin: 0 auto;
      }

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

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

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

    @media (max-width: 640px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

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

      .topbar-links {
        display: grid;
        gap: 2px;
        text-align: right;
      }

      .header-inner {
        min-height: 68px;
        gap: 10px;
      }

      .logo {
        min-width: 0;
        max-width: 48vw;
        font-size: 15px;
      }

      .logo img,
      .logo-mark {
        width: 34px;
        height: 34px;
      }

      .header-btns > span,
      .account-link {
        display: none;
      }

      .ea-content-stack .product-overview {
        padding: 34px 0 40px;
      }

      .ea-content-stack .overview-grid {
        gap: 28px;
      }

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

      .ea-content-stack .product-summary-panel h1 {
        font-size: 30px;
      }

      .ea-content-stack .product-lead {
        font-size: 16px;
      }

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

      .ea-content-stack .product-content-section {
        padding: 40px 0 48px;
      }

      .ea-content-stack .product-body {
        padding: 22px 18px;
      }

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

      .ea-content-stack .related-products {
        padding-bottom: 52px;
      }

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

      .ea-content-stack .related-card p {
        min-height: 0;
      }

      .footer-main {
        padding: 40px 0 32px;
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-bottom-inner {
        padding: 17px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
      }
    }