:root {
      --theme: #0B3D91;
      --theme-dark: #07285f;
      --theme-soft: #eaf1fb;
      --template-theme: {主题色};
      --ink: #172033;
      --muted: #667085;
      --line: #dfe5ee;
      --surface: #ffffff;
      --canvas: #f5f7fa;
      --success: #13795b;
      --warning: #b7791f;
      --radius: 8px;
      --shadow: 0 16px 40px rgba(20, 34, 60, 0.1);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

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

    body.drawer-locked {
      overflow: hidden;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      color: inherit;
    }

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

    .topbar {
      color: #eaf1fb;
      background: #07162d;
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

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

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

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

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .logo {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme-dark);
      font-weight: 800;
    }

    .logo img {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      object-fit: contain;
    }

    .logo span {
      max-width: 190px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .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: static;
      display: flex;
      align-items: stretch;
    }

    .nav-link {
      position: relative;
      display: flex;
      align-items: center;
      padding: 0 12px;
      color: #344054;
      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: 12px;
      bottom: 0;
      left: 12px;
      height: 3px;
      background: var(--theme);
      content: "";
      opacity: 0;
      transform: scaleX(0);
      transition: 0.2s ease;
    }

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

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

    .nav-link.has-arrow::before {
      position: absolute;
      right: 10px;
      top: 50%;
      width: 6px;
      height: 6px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      content: "";
      transform: translateY(-70%) rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      padding-top: 1px;
      visibility: hidden;
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    }

    .dropdown-panel::before,
    .mega-menu::before {
      position: absolute;
      right: 0;
      bottom: 100%;
      left: 0;
      height: 10px;
      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;
      pointer-events: auto;
      transform: translateY(0);
    }

    .dropdown-shell,
    .mega-shell {
      width: min(calc(100% - 40px), var(--container));
      margin: 0 auto;
      padding: 24px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-top: 3px solid var(--theme);
      box-shadow: var(--shadow);
    }

    .dropdown-shell {
      max-width: 520px;
      margin-right: calc((100% - min(calc(100% - 40px), var(--container))) / 2 + 560px);
    }

    .dropdown-title,
    .mega-title {
      margin: 0 0 14px;
      color: var(--theme-dark);
      font-size: 14px;
      font-weight: 800;
    }

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

    .dropdown-list a,
    .mega-category-links a {
      padding: 9px 10px;
      color: #475467;
      border-radius: 4px;
    }

    .dropdown-list a:hover,
    .mega-category-links a:hover {
      color: var(--theme);
      background: var(--theme-soft);
    }

    .mega-layout {
      display: grid;
      grid-template-columns: 210px minmax(0, 1fr);
      gap: 28px;
    }

    .mega-categories {
      padding-right: 22px;
      border-right: 1px solid var(--line);
    }

    .mega-category-links {
      display: grid;
      gap: 2px;
    }

    .mega-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .mega-card {
      min-width: 0;
      display: grid;
      grid-template-columns: 54px minmax(0, 1fr);
      align-items: center;
      gap: 12px;
      min-height: 82px;
      padding: 12px;
      background: #f8fafc;
      border: 1px solid #e7ebf1;
      border-radius: 6px;
      transition: 0.18s ease;
    }

    .mega-card:hover {
      border-color: #a8bde0;
      background: var(--theme-soft);
      transform: translateY(-2px);
    }

    .mega-card img {
      width: 54px;
      height: 54px;
      object-fit: cover;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 5px;
    }

    .mega-card > span {
      min-width: 0;
      display: grid;
      gap: 4px;
      color: var(--muted);
      font-size: 12px;
    }

    .mega-card strong {
      overflow: hidden;
      color: #1d2939;
      font-size: 14px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mega-summary {
      display: -webkit-box;
      overflow: hidden;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .mega-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 3px 8px;
    }

    .mega-footer {
      display: flex;
      justify-content: center;
      margin-top: 18px;
      padding: 11px;
      color: var(--theme);
      background: var(--theme-soft);
      border-radius: 5px;
      font-size: 13px;
      font-weight: 800;
    }

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

    .header-btns > a {
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 7px 13px;
      color: #ffffff;
      background: var(--theme);
      border: 1px solid var(--theme);
      border-radius: 5px;
      font-size: 13px;
      font-weight: 800;
    }

    .header-btns > a:hover {
      background: var(--theme-dark);
    }

    .hamburger {
      width: 42px;
      height: 42px;
      display: none;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      padding: 0;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 5px;
      cursor: pointer;
    }

    .hamburger span {
      width: 19px;
      height: 2px;
      background: var(--ink);
      transition: 0.2s 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;
      z-index: 80;
      inset: 0;
      visibility: hidden;
      background: rgba(7, 22, 45, 0.62);
      opacity: 0;
      transition: 0.25s ease;
    }

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

    .mobile-drawer {
      position: fixed;
      z-index: 90;
      top: 0;
      right: 0;
      width: min(90vw, 390px);
      height: 100vh;
      overflow-y: auto;
      background: #ffffff;
      box-shadow: -18px 0 50px rgba(7, 22, 45, 0.22);
      transform: translateX(102%);
      transition: transform 0.25s ease;
    }

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

    .drawer-head {
      min-height: 70px;
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 14px 18px;
      border-bottom: 1px solid var(--line);
    }

    .drawer-head > a {
      display: inline-flex;
      align-items: center;
      min-height: 36px;
      padding: 7px 12px;
      color: #ffffff;
      background: var(--theme);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      padding: 0;
      color: #344054;
      background: #f2f4f7;
      border: 0;
      border-radius: 4px;
      font-size: 25px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 12px 18px 28px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 48px;
      display: flex;
      align-items: center;
      padding: 10px 4px;
      background: transparent;
      border: 0;
      border-bottom: 1px solid #eaecf0;
      text-align: left;
      font-weight: 800;
      cursor: pointer;
    }

    .drawer-toggle {
      position: relative;
    }

    .drawer-toggle::after {
      position: absolute;
      right: 7px;
      width: 8px;
      height: 8px;
      border-right: 2px solid #667085;
      border-bottom: 2px solid #667085;
      content: "";
      transform: rotate(45deg);
      transition: 0.2s ease;
    }

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

    .drawer-submenu {
      max-height: 0;
      display: grid;
      overflow: hidden;
      background: #f8fafc;
      transition: max-height 0.25s ease;
    }

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

    .drawer-submenu a {
      padding: 10px 14px;
      color: #475467;
      border-bottom: 1px solid #edf0f4;
      font-size: 14px;
    }

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

    .target-page-main.download-page-main {
      min-width: 0;
      overflow: hidden;
    }

    .download-page-main .download-intro {
      position: relative;
      color: #ffffff;
      background:
        linear-gradient(rgba(7, 29, 68, 0.9), rgba(11, 61, 145, 0.92)),
        radial-gradient(circle at 20% 20%, #2c6ac5 0, transparent 35%);
      border-bottom: 5px solid #e8b84a;
    }

    .download-page-main .download-intro-inner {
      min-height: 410px;
      display: grid;
      align-content: center;
      justify-items: center;
      padding: 72px 0;
      text-align: center;
    }

    .download-page-main .intro-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      padding: 5px 10px;
      color: #ffe7a6;
      border: 1px solid rgba(255, 231, 166, 0.45);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .download-page-main .intro-label::before {
      width: 7px;
      height: 7px;
      background: #f3c85c;
      border-radius: 50%;
      content: "";
    }

    .download-page-main .download-intro h1 {
      max-width: 840px;
      margin: 0;
      font-size: clamp(34px, 5vw, 60px);
      line-height: 1.15;
      letter-spacing: 0;
    }

    .download-page-main .download-intro p {
      max-width: 720px;
      margin: 22px 0 0;
      color: #dbe7fa;
      font-size: 17px;
    }

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

    .download-page-main .primary-button,
    .download-page-main .secondary-button {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 20px;
      border-radius: 5px;
      font-weight: 800;
    }

    .download-page-main .primary-button {
      color: #172033;
      background: #f3c85c;
      border: 1px solid #f3c85c;
    }

    .download-page-main .primary-button:hover {
      background: #ffd978;
    }

    .download-page-main .secondary-button {
      color: #ffffff;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.58);
    }

    .download-page-main .secondary-button:hover {
      background: rgba(255, 255, 255, 0.1);
    }

    .download-page-main .platform-section,
    .download-page-main .steps-section,
    .download-page-main .security-section,
    .download-page-main .faq-section {
      padding: 76px 0;
    }

    .download-page-main .section-heading {
      max-width: 720px;
      margin: 0 auto 34px;
      text-align: center;
    }

    .download-page-main .section-heading span {
      color: var(--theme);
      font-size: 13px;
      font-weight: 800;
    }

    .download-page-main .section-heading h2 {
      margin: 8px 0 10px;
      color: #101828;
      font-size: clamp(27px, 4vw, 39px);
      line-height: 1.25;
      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: #ffffff;
      border: 1px solid var(--line);
      border-top: 4px solid var(--theme);
      border-radius: var(--radius);
      box-shadow: 0 8px 24px rgba(29, 41, 57, 0.06);
    }

    .download-page-main .platform-icon {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      margin-bottom: 20px;
      color: #ffffff;
      background: var(--theme);
      border-radius: 6px;
      font-size: 14px;
      font-weight: 900;
    }

    .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);
    }

    .download-page-main .platform-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
      margin-bottom: 20px;
    }

    .download-page-main .platform-meta span {
      padding: 4px 8px;
      color: #475467;
      background: #f2f4f7;
      border-radius: 3px;
      font-size: 12px;
    }

    .download-page-main .card-link {
      color: var(--theme);
      font-weight: 800;
    }

    .download-page-main .card-link:hover {
      text-decoration: underline;
    }

    .download-page-main .steps-section {
      background: #ffffff;
      border-block: 1px solid var(--line);
    }

    .download-page-main .steps-grid {
      position: relative;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 20px;
    }

    .download-page-main .steps-grid::before {
      position: absolute;
      top: 26px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: #cbd7e9;
      content: "";
    }

    .download-page-main .step-card {
      position: relative;
      min-width: 0;
      padding: 0 14px;
      text-align: center;
    }

    .download-page-main .step-number {
      position: relative;
      z-index: 1;
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      margin: 0 auto 18px;
      color: #ffffff;
      background: var(--theme);
      border: 6px solid #e8eff9;
      border-radius: 50%;
      font-weight: 900;
    }

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

    .download-page-main .step-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .download-page-main .security-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .download-page-main .security-panel,
    .download-page-main .check-panel {
      min-width: 0;
      padding: 32px;
      border-radius: var(--radius);
    }

    .download-page-main .security-panel {
      color: #ffffff;
      background: #101828;
    }

    .download-page-main .security-panel h2 {
      margin: 0 0 13px;
      font-size: 30px;
      line-height: 1.25;
    }

    .download-page-main .security-panel p {
      margin: 0;
      color: #cbd5e1;
    }

    .download-page-main .security-code {
      margin-top: 25px;
      padding: 16px;
      overflow-wrap: anywhere;
      color: #f7d577;
      background: #07101f;
      border: 1px solid #344054;
      border-radius: 5px;
      font-family: Consolas, monospace;
      font-size: 13px;
    }

    .download-page-main .check-panel {
      background: #ffffff;
      border: 1px solid var(--line);
    }

    .download-page-main .check-panel h3 {
      margin: 0 0 18px;
      font-size: 22px;
    }

    .download-page-main .check-list {
      display: grid;
      gap: 14px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .download-page-main .check-list li {
      position: relative;
      padding-left: 31px;
      color: #475467;
    }

    .download-page-main .check-list li::before {
      position: absolute;
      top: 2px;
      left: 0;
      width: 21px;
      height: 21px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: var(--success);
      border-radius: 50%;
      content: "✓";
      font-size: 12px;
      font-weight: 900;
    }

    .download-page-main .faq-section {
      background: #eef3fa;
    }

    .download-page-main .faq-list {
      max-width: 860px;
      display: grid;
      gap: 10px;
      margin: 0 auto;
    }

    .download-page-main .faq-item {
      overflow: hidden;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 6px;
    }

    .download-page-main .faq-question {
      position: relative;
      width: 100%;
      min-height: 58px;
      padding: 16px 54px 16px 20px;
      background: #ffffff;
      border: 0;
      text-align: left;
      font-weight: 800;
      cursor: pointer;
    }

    .download-page-main .faq-question::after {
      position: absolute;
      top: 50%;
      right: 20px;
      color: var(--theme);
      content: "+";
      font-size: 24px;
      transform: translateY(-50%);
    }

    .download-page-main .faq-question.active::after {
      content: "−";
    }

    .download-page-main .faq-answer {
      max-height: 0;
      overflow: hidden;
      color: var(--muted);
      transition: max-height 0.22s ease;
    }

    .download-page-main .faq-answer.open {
      max-height: 220px;
    }

    .download-page-main .faq-answer p {
      margin: 0;
      padding: 0 20px 20px;
    }

    .download-page-main .download-cta {
      padding: 44px 0;
      color: #ffffff;
      background: var(--theme);
    }

    .download-page-main .cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }

    .download-page-main .cta-inner h2 {
      margin: 0 0 6px;
      font-size: 27px;
    }

    .download-page-main .cta-inner p {
      margin: 0;
      color: #dbe7fa;
    }

    .download-page-main .cta-inner .primary-button {
      flex: 0 0 auto;
    }

    .footer {
      color: #d0d5dd;
      background: #07162d;
    }

    .footer-main {
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1fr;
      gap: 42px;
      padding-top: 58px;
      padding-bottom: 46px;
    }

    .footer .logo {
      color: #ffffff;
    }

    .footer-brand p {
      margin: 18px 0 0;
      color: #98a2b3;
      font-size: 14px;
    }

    .footer h3 {
      margin: 7px 0 17px;
      color: #ffffff;
      font-size: 15px;
    }

    .footer-links,
    .footer-contact {
      display: grid;
      gap: 9px;
      font-size: 14px;
    }

    .footer-links a,
    .footer-contact a {
      color: #b9c2d0;
    }

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

    .footer-contact strong {
      color: #ffffff;
      font-size: 13px;
    }

    .footer-bottom {
      min-height: 66px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      border-top: 1px solid #24344e;
      color: #98a2b3;
      font-size: 13px;
    }

    @media (max-width: 1120px) {
      .main-nav {
        display: none;
      }

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

      .hamburger {
        display: flex;
      }

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

      .download-page-main .steps-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        row-gap: 38px;
      }

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

      .footer-main {
        grid-template-columns: 1.4fr 1fr 1fr;
      }

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 760px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

      .topbar-inner {
        padding: 8px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
      }

      .topbar-contact {
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
      }

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

      .logo img {
        width: 36px;
        height: 36px;
        flex-basis: 36px;
      }

      .logo span {
        max-width: 130px;
        font-size: 14px;
      }

      .header-btns > a {
        display: none;
      }

      .download-page-main .download-intro-inner {
        min-height: 380px;
        padding: 58px 0;
      }

      .download-page-main .download-intro h1 {
        font-size: 35px;
      }

      .download-page-main .download-intro p {
        font-size: 15px;
      }

      .download-page-main .intro-actions {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
      }

      .download-page-main .platform-section,
      .download-page-main .steps-section,
      .download-page-main .security-section,
      .download-page-main .faq-section {
        padding: 56px 0;
      }

      .download-page-main .platform-grid,
      .download-page-main .steps-grid,
      .download-page-main .security-layout {
        grid-template-columns: 1fr;
      }

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

      .download-page-main .security-panel,
      .download-page-main .check-panel {
        padding: 24px;
      }

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

      .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 32px 24px;
      }

      .footer-brand {
        grid-column: 1 / -1;
      }

      .footer-bottom {
        padding: 18px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
      }
    }

    @media (max-width: 480px) {
      .footer-main {
        grid-template-columns: 1fr;
      }

      .footer-brand {
        grid-column: auto;
      }

      .download-page-main .download-intro h1 {
        font-size: 31px;
      }

      .download-page-main .section-heading h2 {
        font-size: 27px;
      }
    }