:root {
      --theme: #0B3D91;
      --template-theme: {主题色};
      --theme-dark: #072d6d;
      --theme-soft: #eaf1fc;
      --ink: #172033;
      --muted: #637089;
      --line: #dce3ee;
      --surface: #f5f7fa;
      --white: #fff;
      --green: #087f5b;
      --orange: #d65f18;
      --shadow: 0 12px 32px rgba(24, 39, 75, .1);
      --container: 1180px;
    }

    * {
      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;
      letter-spacing: 0;
    }

    body,
    button,
    input {
      font-family: 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 {
      min-height: 38px;
      color: #dfe9fb;
      background: #092a5f;
      font-size: 12px;
    }

    .topbar .container {
      min-height: 38px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

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

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

    .header {
      position: relative;
      z-index: 50;
      height: 76px;
      background: rgba(255, 255, 255, .98);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      height: 100%;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .logo {
      min-width: 160px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 18px;
      font-weight: 800;
      white-space: nowrap;
    }

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

    .main-nav {
      height: 100%;
      min-width: 0;
      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 {
      position: relative;
      padding: 0 14px;
      display: flex;
      align-items: center;
      color: #29354b;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

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

    .nav-link::after {
      position: absolute;
      right: 14px;
      bottom: 0;
      left: 14px;
      height: 3px;
      content: "";
      background: var(--theme);
      transform: scaleX(0);
      transition: transform .2s ease;
    }

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

    .nav-link.has-arrow {
      padding-right: 27px;
    }

    .nav-link.has-arrow::before {
      position: absolute;
      top: 50%;
      right: 12px;
      width: 6px;
      height: 6px;
      content: "";
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: translateY(-65%) rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 50%;
      z-index: 60;
      padding: 22px;
      visibility: hidden;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 3px solid var(--theme);
      box-shadow: var(--shadow);
      opacity: 0;
      transform: translate(-50%, 8px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s;
    }

    .dropdown-panel {
      width: 330px;
    }

    .mega-menu {
      width: min(720px, calc(100vw - 40px));
    }

    .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: -70px;
      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);
    }

    .panel-title {
      margin: 0 0 12px;
      color: #172033;
      font-size: 14px;
    }

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

    .panel-list > a {
      min-width: 0;
      padding: 8px 10px;
      color: #3a465b;
      border-radius: 4px;
      font-size: 13px;
      overflow-wrap: anywhere;
    }

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

    .panel-list small {
      margin-left: 8px;
      color: #7b879b;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.55fr) minmax(190px, .8fr);
      gap: 24px;
    }

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

    .mega-card {
      min-width: 0;
      padding: 10px;
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      column-gap: 8px;
      color: #334057;
      background: #f7f9fc;
      border: 1px solid #e7ebf2;
      border-radius: 5px;
    }

    .mega-card:hover {
      color: var(--theme);
      border-color: #afc5eb;
      background: var(--theme-soft);
    }

    .mega-card img {
      width: 26px;
      height: 26px;
      grid-row: 1 / 3;
      object-fit: contain;
    }

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

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

    .mega-card small {
      color: #6d798d;
      font-size: 11px;
    }

    .mega-footer {
      margin-top: 14px;
      padding: 9px 12px;
      display: inline-flex;
      align-items: center;
      color: var(--theme);
      background: var(--theme-soft);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
    }

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

    .member-btn,
    .open-btn {
      min-height: 38px;
      padding: 8px 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
    }

    .member-btn {
      color: var(--theme);
      border: 1px solid #b8c9e5;
    }

    .open-btn {
      color: #fff;
      background: var(--theme);
      border: 1px solid var(--theme);
    }

    .member-btn:hover {
      background: var(--theme-soft);
    }

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

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 9px;
      display: none;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 4px;
      cursor: pointer;
    }

    .hamburger span {
      width: 20px;
      height: 2px;
      display: block;
      background: var(--ink);
      transition: transform .2s ease, opacity .2s ease;
    }

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

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

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

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 89;
      visibility: hidden;
      background: rgba(10, 21, 40, .54);
      opacity: 0;
      transition: opacity .25s ease, visibility .25s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 90;
      width: min(380px, 92vw);
      height: 100dvh;
      overflow-y: auto;
      background: #fff;
      box-shadow: -12px 0 32px rgba(14, 28, 52, .2);
      transform: translateX(105%);
      transition: transform .25s ease;
    }

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

    .drawer-head {
      min-height: 68px;
      padding: 14px 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      background: var(--theme);
    }

    .drawer-head span {
      min-width: 0;
      flex: 1;
      font-weight: 700;
    }

    .drawer-head > a {
      padding: 6px 12px;
      border: 1px solid rgba(255, 255, 255, .55);
      border-radius: 4px;
      font-size: 13px;
    }

    .drawer-close {
      width: 34px;
      height: 34px;
      padding: 0;
      color: #fff;
      background: transparent;
      border: 0;
      font-size: 27px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 10px 16px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 48px;
      padding: 12px 4px;
      display: flex;
      align-items: center;
      color: #27344b;
      background: transparent;
      border: 0;
      border-bottom: 1px solid #e8ecf2;
      font-size: 15px;
      font-weight: 700;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle {
      position: relative;
      padding-right: 30px;
    }

    .drawer-toggle::after {
      position: absolute;
      right: 7px;
      width: 8px;
      height: 8px;
      content: "";
      border-right: 2px solid #778397;
      border-bottom: 2px solid #778397;
      transform: rotate(45deg);
      transition: transform .2s ease;
    }

    .drawer-toggle.active::after {
      transform: rotate(225deg);
    }

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: #f6f8fb;
      transition: max-height .3s ease;
    }

    .drawer-submenu.open {
      max-height: 900px;
    }

    .drawer-submenu a {
      padding: 10px 14px;
      display: block;
      color: #556176;
      border-bottom: 1px solid #e6eaf1;
      font-size: 13px;
    }

    .drawer-submenu a:hover {
      color: var(--theme);
      background: var(--theme-soft);
    }

    .download-page-main {
      min-width: 0;
      overflow: hidden;
      background: #fff;
    }

    .download-page-main .download-hero {
      padding: 72px 0 64px;
      color: #fff;
      background:
        linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
        #0b326f;
      background-size: 42px 42px;
    }

    .download-page-main .hero-inner {
      max-width: 850px;
      margin: 0 auto;
      text-align: center;
    }

    .download-page-main .hero-label {
      margin-bottom: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #dce9ff;
      font-size: 13px;
      font-weight: 700;
    }

    .download-page-main .hero-label::before,
    .download-page-main .hero-label::after {
      width: 34px;
      height: 1px;
      content: "";
      background: #7fa8e7;
    }

    .download-page-main h1 {
      margin: 0;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.15;
      letter-spacing: 0;
    }

    .download-page-main .hero-summary {
      max-width: 700px;
      margin: 22px auto 0;
      color: #d9e5f8;
      font-size: 17px;
    }

    .download-page-main .hero-actions {
      margin-top: 30px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
    }

    .download-page-main .primary-action,
    .download-page-main .secondary-action {
      min-height: 48px;
      padding: 11px 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 5px;
      font-weight: 800;
    }

    .download-page-main .primary-action {
      color: var(--theme);
      background: #fff;
    }

    .download-page-main .secondary-action {
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .58);
    }

    .download-page-main .primary-action:hover {
      background: #edf3fc;
    }

    .download-page-main .secondary-action:hover {
      background: rgba(255, 255, 255, .1);
    }

    .download-page-main .trust-strip {
      border-bottom: 1px solid var(--line);
      background: #fff;
    }

    .download-page-main .trust-grid {
      min-height: 84px;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      align-items: center;
    }

    .download-page-main .trust-item {
      padding: 10px 22px;
      text-align: center;
      border-right: 1px solid var(--line);
    }

    .download-page-main .trust-item:last-child {
      border-right: 0;
    }

    .download-page-main .trust-item strong {
      display: block;
      color: var(--theme);
      font-size: 14px;
    }

    .download-page-main .trust-item span {
      color: var(--muted);
      font-size: 12px;
    }

    .download-page-main .section {
      padding: 76px 0;
    }

    .download-page-main .section-muted {
      background: var(--surface);
      border-top: 1px solid #edf0f5;
      border-bottom: 1px solid #edf0f5;
    }

    .download-page-main .section-heading {
      max-width: 720px;
      margin: 0 auto 38px;
      text-align: center;
    }

    .download-page-main .section-heading span {
      color: var(--theme);
      font-size: 12px;
      font-weight: 800;
    }

    .download-page-main .section-heading h2 {
      margin: 7px 0 10px;
      color: #162238;
      font-size: 30px;
      line-height: 1.3;
      letter-spacing: 0;
    }

    .download-page-main .section-heading p {
      margin: 0;
      color: var(--muted);
    }

    .download-page-main .platform-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .download-page-main .platform-card {
      min-width: 0;
      padding: 26px;
      background: #fff;
      border: 1px solid var(--line);
      border-top: 4px solid var(--theme);
      border-radius: 6px;
      box-shadow: 0 8px 22px rgba(28, 44, 72, .06);
    }

    .download-page-main .platform-card:nth-child(2) {
      border-top-color: var(--green);
    }

    .download-page-main .platform-card:nth-child(3) {
      border-top-color: var(--orange);
    }

    .download-page-main .platform-icon {
      width: 48px;
      height: 48px;
      margin-bottom: 18px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--theme);
      border-radius: 6px;
      font-size: 18px;
      font-weight: 900;
    }

    .download-page-main .platform-card:nth-child(2) .platform-icon {
      background: var(--green);
    }

    .download-page-main .platform-card:nth-child(3) .platform-icon {
      background: var(--orange);
    }

    .download-page-main .platform-card h3 {
      margin: 0 0 8px;
      font-size: 20px;
    }

    .download-page-main .platform-card p {
      min-height: 78px;
      margin: 0 0 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .download-page-main .platform-meta {
      margin: 0 0 20px;
      padding: 0;
      display: grid;
      gap: 7px;
      color: #46536a;
      font-size: 13px;
      list-style: none;
    }

    .download-page-main .platform-meta li {
      position: relative;
      padding-left: 18px;
    }

    .download-page-main .platform-meta li::before {
      position: absolute;
      top: 9px;
      left: 2px;
      width: 6px;
      height: 6px;
      content: "";
      background: #2f9e44;
      border-radius: 50%;
    }

    .download-page-main .card-action {
      width: 100%;
      min-height: 44px;
      padding: 10px 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: var(--theme);
      border-radius: 4px;
      font-size: 14px;
      font-weight: 800;
    }

    .download-page-main .card-action:hover {
      background: var(--theme-dark);
    }

    .download-page-main .steps {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 24px;
    }

    .download-page-main .steps::before {
      position: absolute;
      top: 27px;
      right: 12%;
      left: 12%;
      height: 2px;
      content: "";
      background: #b9c9e4;
    }

    .download-page-main .step {
      position: relative;
      z-index: 1;
      min-width: 0;
      text-align: center;
    }

    .download-page-main .step-number {
      width: 56px;
      height: 56px;
      margin: 0 auto 18px;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--theme);
      border: 7px solid #e5edf9;
      border-radius: 50%;
      font-size: 15px;
      font-weight: 900;
    }

    .download-page-main .step h3 {
      margin: 0 0 7px;
      font-size: 17px;
    }

    .download-page-main .step p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
    }

    .download-page-main .requirements {
      display: grid;
      grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
      border: 1px solid var(--line);
      border-radius: 6px;
      overflow: hidden;
    }

    .download-page-main .requirements-intro {
      padding: 38px;
      color: #fff;
      background: var(--theme);
    }

    .download-page-main .requirements-intro h2 {
      margin: 0 0 12px;
      font-size: 28px;
    }

    .download-page-main .requirements-intro p {
      margin: 0;
      color: #dce8fa;
    }

    .download-page-main .requirements-list {
      padding: 30px 36px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
      background: #fff;
    }

    .download-page-main .requirement {
      padding: 16px;
      background: #f7f9fc;
      border-left: 3px solid #9fb8dd;
    }

    .download-page-main .requirement strong {
      display: block;
      margin-bottom: 4px;
      color: #25334a;
      font-size: 14px;
    }

    .download-page-main .requirement span {
      color: var(--muted);
      font-size: 12px;
    }

    .download-page-main .security-note {
      margin-top: 28px;
      padding: 18px 20px;
      color: #594514;
      background: #fff8df;
      border: 1px solid #ead89c;
      border-radius: 5px;
      font-size: 13px;
    }

    .download-page-main .faq-list {
      max-width: 860px;
      margin: 0 auto;
      border-top: 1px solid var(--line);
    }

    .download-page-main details {
      border-bottom: 1px solid var(--line);
    }

    .download-page-main summary {
      position: relative;
      padding: 20px 48px 20px 4px;
      color: #253148;
      font-size: 15px;
      font-weight: 800;
      cursor: pointer;
      list-style: none;
    }

    .download-page-main summary::-webkit-details-marker {
      display: none;
    }

    .download-page-main summary::after {
      position: absolute;
      top: 19px;
      right: 8px;
      width: 24px;
      height: 24px;
      display: grid;
      place-items: center;
      content: "+";
      color: var(--theme);
      background: var(--theme-soft);
      border-radius: 50%;
      font-size: 18px;
    }

    .download-page-main details[open] summary::after {
      content: "−";
    }

    .download-page-main details p {
      margin: 0;
      padding: 0 48px 20px 4px;
      color: var(--muted);
      font-size: 14px;
    }

    .download-page-main .final-cta {
      padding: 54px 0;
      color: #fff;
      background: #11233f;
    }

    .download-page-main .final-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .download-page-main .final-cta h2 {
      margin: 0 0 7px;
      font-size: 28px;
    }

    .download-page-main .final-cta p {
      margin: 0;
      color: #c8d4e6;
    }

    .download-page-main .final-cta a {
      min-width: 150px;
      min-height: 46px;
      padding: 10px 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--theme);
      background: #fff;
      border-radius: 4px;
      font-weight: 800;
    }

    .footer {
      padding: 58px 0 0;
      color: #c8d1df;
      background: #0e1828;
    }

    .footer-grid {
      padding-bottom: 42px;
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1.1fr;
      gap: 40px;
    }

    .footer h3 {
      margin: 0 0 16px;
      color: #fff;
      font-size: 14px;
    }

    .footer a {
      margin: 0 0 8px;
      display: block;
      color: #b9c4d4;
      font-size: 13px;
    }

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

    .footer p {
      margin: 10px 0 0;
      color: #98a6ba;
      font-size: 13px;
    }

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

    .footer-bottom {
      min-height: 70px;
      padding: 17px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      color: #8e9caf;
      border-top: 1px solid rgba(255, 255, 255, .1);
      font-size: 12px;
    }

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

      .hamburger {
        display: flex;
      }

      .header-inner {
        gap: 16px;
      }

      .logo {
        margin-right: auto;
      }
    }

    @media (max-width: 820px) {
      .download-page-main .platform-grid {
        grid-template-columns: 1fr;
      }

      .download-page-main .platform-card p {
        min-height: 0;
      }

      .download-page-main .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        row-gap: 36px;
      }

      .download-page-main .steps::before {
        display: none;
      }

      .download-page-main .requirements {
        grid-template-columns: 1fr;
      }

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

      .download-page-main .trust-item:nth-child(2) {
        border-right: 0;
      }

      .download-page-main .trust-item:nth-child(-n+2) {
        border-bottom: 1px solid var(--line);
      }

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

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
      }
    }

    @media (max-width: 600px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

      .topbar {
        padding: 7px 0;
      }

      .topbar .container {
        min-height: 42px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 1px;
      }

      .topbar-links {
        max-width: 100%;
        align-items: flex-start;
        flex-direction: column;
        gap: 0;
        overflow-wrap: anywhere;
      }

      .header {
        height: 68px;
      }

      .logo {
        min-width: 0;
        max-width: calc(100% - 52px);
      }

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

      .logo span {
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .member-btn,
      .open-btn {
        display: none;
      }

      .download-page-main .download-hero {
        padding: 52px 0 48px;
      }

      .download-page-main h1 {
        font-size: 36px;
      }

      .download-page-main .hero-summary {
        font-size: 15px;
      }

      .download-page-main .hero-actions {
        align-items: stretch;
        flex-direction: column;
      }

      .download-page-main .section {
        padding: 56px 0;
      }

      .download-page-main .section-heading h2 {
        font-size: 25px;
      }

      .download-page-main .trust-item {
        padding: 12px 8px;
      }

      .download-page-main .steps {
        grid-template-columns: 1fr;
      }

      .download-page-main .step {
        padding: 0 18px;
      }

      .download-page-main .requirements-intro,
      .download-page-main .requirements-list {
        padding: 26px 22px;
      }

      .download-page-main .requirements-list {
        grid-template-columns: 1fr;
      }

      .download-page-main .final-cta-inner {
        align-items: stretch;
        flex-direction: column;
      }

      .download-page-main .final-cta h2 {
        font-size: 24px;
      }

      .footer {
        padding-top: 44px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
    }