:root {
      --brand: #0B3D91;
      --brand-dark: #062861;
      --brand-light: #EAF1FC;
      --template-theme: {主题色};
      --ink: #172033;
      --muted: #5D687B;
      --line: #DDE3EC;
      --surface: #F5F7FA;
      --white: #FFFFFF;
      --silver: #B8C1CE;
      --success: #19734B;
      --shadow: 0 14px 36px rgba(15, 35, 70, 0.1);
      --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;
      line-height: 1.65;
    }

    body.drawer-lock {
      overflow: hidden;
    }

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

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

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

    button {
      color: inherit;
    }

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

    .topbar {
      color: #EAF1FC;
      background: var(--brand-dark);
      font-size: 13px;
    }

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

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

    .topbar-contact a:hover {
      color: var(--white);
      text-decoration: underline;
    }

    .header {
      position: relative;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.98);
    }

    .header .container {
      position: relative;
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 26px;
    }

    .logo {
      min-width: 180px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--brand-dark);
      font-size: 18px;
      font-weight: 800;
    }

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

    .main-nav {
      min-width: 0;
      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 {
      position: relative;
      padding: 0 13px;
      display: flex;
      align-items: center;
      gap: 6px;
      color: #28354A;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      right: 13px;
      bottom: 0;
      left: 13px;
      height: 3px;
      background: var(--brand);
      transform: scaleX(0);
      transition: transform 0.2s ease;
    }

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

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

    .nav-link.has-arrow::before {
      content: "";
      position: absolute;
      top: 50%;
      right: 10px;
      width: 6px;
      height: 6px;
      border-right: 1px solid currentColor;
      border-bottom: 1px solid currentColor;
      transform: translateY(-70%) rotate(45deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      z-index: 80;
      visibility: hidden;
      border: 1px solid var(--line);
      background: var(--white);
      box-shadow: var(--shadow);
      opacity: 0;
      transform: translateY(8px);
      pointer-events: none;
      transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    }

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

    .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);
      pointer-events: auto;
    }

    .dropdown-panel {
      left: 0;
      width: 330px;
      padding: 20px;
      border-radius: 0 0 6px 6px;
    }

    .dropdown-title {
      margin: 0 0 12px;
      color: var(--brand-dark);
      font-size: 14px;
      font-weight: 800;
    }

    .news-link {
      padding: 9px 0;
      display: block;
      overflow: hidden;
      border-bottom: 1px solid #EDF0F4;
      color: #354158;
      font-size: 13px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .news-link:hover {
      color: var(--brand);
    }

    .dropdown-footer,
    .mega-footer {
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
    }

    .dropdown-footer {
      padding-top: 14px;
      display: flex;
      justify-content: space-between;
    }

    .mega-menu {
      left: 50%;
      width: min(940px, calc(100vw - 40px));
      border-radius: 0 0 6px 6px;
      transform: translate(-50%, 8px);
    }

    .nav-item:hover > .mega-menu,
    .nav-item:focus-within > .mega-menu {
      transform: translate(-50%, 0);
    }

    .mega-layout {
      display: grid;
      grid-template-columns: 230px minmax(0, 1fr);
    }

    .mega-side {
      padding: 25px;
      color: var(--white);
      background: var(--brand-dark);
    }

    .mega-side h3 {
      margin: 0 0 9px;
      font-size: 18px;
    }

    .mega-side p {
      margin: 0;
      color: #CAD8EE;
      font-size: 13px;
    }

    .mega-categories {
      margin-top: 18px;
      display: grid;
      gap: 7px;
    }

    .mega-categories a {
      padding: 6px 0;
      color: #F1F5FC;
      font-size: 13px;
    }

    .mega-categories a:hover {
      text-decoration: underline;
    }

    .mega-content {
      min-width: 0;
      padding: 22px;
    }

    .mega-head {
      margin-bottom: 15px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .mega-head strong {
      color: var(--brand-dark);
      font-size: 15px;
    }

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

    .mega-card {
      min-width: 0;
      min-height: 112px;
      padding: 13px;
      display: grid;
      align-content: start;
      gap: 7px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: var(--white);
      transition: border-color 0.18s ease, box-shadow 0.18s ease;
    }

    .mega-card:hover {
      border-color: #9DB4D9;
      box-shadow: 0 8px 20px rgba(11, 61, 145, 0.09);
    }

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

    .mega-card.video-card img,
    .mega-card.product-card img {
      width: 100%;
      height: 76px;
      object-fit: cover;
    }

    .mega-card strong {
      overflow: hidden;
      color: #21304A;
      font-size: 13px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mega-card p {
      margin: 0;
      overflow: hidden;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.5;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .mega-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 4px 9px;
      color: #68758A;
      font-size: 11px;
    }

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

    .header-btns > a,
    .open-account {
      min-height: 38px;
      padding: 8px 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--brand);
      border-radius: 4px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
    }

    .header-btns .open-account {
      color: var(--white);
      background: var(--brand);
    }

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

    .hamburger span {
      width: 24px;
      height: 2px;
      margin: 5px auto;
      display: block;
      background: var(--brand-dark);
      transition: transform 0.2s ease, opacity 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;
      inset: 0;
      z-index: 90;
      visibility: hidden;
      background: rgba(8, 19, 38, 0.58);
      opacity: 0;
      transition: opacity 0.22s ease, visibility 0.22s;
    }

    .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: var(--white);
      box-shadow: -16px 0 38px rgba(5, 20, 45, 0.18);
      transform: translateX(102%);
      transition: transform 0.25s ease;
    }

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

    .drawer-head {
      min-height: 72px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 10px;
      border-bottom: 1px solid var(--line);
      background: var(--brand-dark);
      color: var(--white);
    }

    .drawer-head > a {
      padding: 7px 10px;
      border: 1px solid rgba(255, 255, 255, 0.45);
      border-radius: 4px;
      font-size: 13px;
    }

    .drawer-close {
      width: 40px;
      height: 40px;
      margin-left: auto;
      border: 0;
      color: var(--white);
      background: transparent;
      font-size: 29px;
      line-height: 1;
      cursor: pointer;
    }

    .drawer-menu {
      padding: 10px 18px 30px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 48px;
      padding: 12px 4px;
      display: flex;
      align-items: center;
      border: 0;
      border-bottom: 1px solid var(--line);
      background: transparent;
      color: #25334A;
      font-size: 15px;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

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

    .drawer-toggle::after {
      content: "+";
      position: absolute;
      right: 5px;
      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 0.3s ease;
    }

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

    .drawer-submenu a {
      padding: 10px 14px;
      display: block;
      border-bottom: 1px solid #E7EBF1;
      color: #536078;
      font-size: 13px;
    }

    .about-page {
      min-width: 0;
      overflow: hidden;
    }

    .about-page .about-hero {
      position: relative;
      padding: 78px 0 84px;
      text-align: center;
      background:
        linear-gradient(rgba(6, 40, 97, 0.94), rgba(11, 61, 145, 0.91)),
        linear-gradient(135deg, #0B3D91, #061D46);
      color: var(--white);
    }

    .about-page .about-hero::after {
      content: "";
      position: absolute;
      right: 0;
      bottom: 0;
      left: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--silver), var(--white), var(--silver));
    }

    .about-page .hero-kicker {
      margin: 0 0 13px;
      color: #DCE7F7;
      font-size: 13px;
      font-weight: 800;
    }

    .about-page .about-hero h1 {
      max-width: 820px;
      margin: 0 auto;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.18;
      letter-spacing: 0;
    }

    .about-page .about-hero p {
      max-width: 760px;
      margin: 20px auto 0;
      color: #E1E9F5;
      font-size: 17px;
    }

    .about-page .hero-actions {
      margin-top: 29px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
    }

    .about-page .primary-action,
    .about-page .secondary-action {
      min-height: 46px;
      padding: 11px 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--white);
      border-radius: 4px;
      font-weight: 800;
    }

    .about-page .primary-action {
      color: var(--brand-dark);
      background: var(--white);
    }

    .about-page .secondary-action {
      color: var(--white);
      background: transparent;
    }

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

    .about-page .section-alt {
      background: var(--surface);
    }

    .about-page .section-heading {
      max-width: 740px;
      margin: 0 auto 38px;
      text-align: center;
    }

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

    .about-page .section-heading h2 {
      margin: 8px 0 12px;
      color: var(--brand-dark);
      font-size: 32px;
      line-height: 1.3;
      letter-spacing: 0;
    }

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

    .about-page .mission-panel {
      padding: 44px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 1px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: var(--line);
    }

    .about-page .mission-item {
      min-width: 0;
      padding: 28px;
      background: var(--white);
    }

    .about-page .mission-number {
      width: 42px;
      height: 42px;
      margin-bottom: 18px;
      display: grid;
      place-items: center;
      border: 1px solid #B8C7DE;
      border-radius: 50%;
      color: var(--brand);
      background: var(--brand-light);
      font-size: 13px;
      font-weight: 900;
    }

    .about-page .mission-item h3 {
      margin: 0 0 9px;
      color: var(--brand-dark);
      font-size: 20px;
    }

    .about-page .mission-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

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

    .about-page .service-card {
      min-width: 0;
      padding: 26px;
      border: 1px solid var(--line);
      border-top: 4px solid var(--brand);
      border-radius: 6px;
      background: var(--white);
    }

    .about-page .service-icon {
      width: 46px;
      height: 46px;
      margin-bottom: 17px;
      display: grid;
      place-items: center;
      border-radius: 4px;
      color: var(--white);
      background: var(--brand);
      font-weight: 900;
    }

    .about-page .service-card h3 {
      margin: 0 0 8px;
      color: var(--brand-dark);
      font-size: 18px;
    }

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

    .about-page .principles {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 50px;
      align-items: center;
    }

    .about-page .principle-intro h2 {
      margin: 8px 0 16px;
      color: var(--brand-dark);
      font-size: 34px;
      line-height: 1.3;
    }

    .about-page .principle-intro > span {
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
    }

    .about-page .principle-intro p {
      color: var(--muted);
    }

    .about-page .principle-list {
      display: grid;
      gap: 12px;
    }

    .about-page .principle-item {
      padding: 18px 20px;
      display: grid;
      grid-template-columns: 34px minmax(0, 1fr);
      gap: 14px;
      border: 1px solid var(--line);
      border-radius: 5px;
      background: var(--white);
    }

    .about-page .principle-mark {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--white);
      background: var(--success);
      font-size: 13px;
      font-weight: 900;
    }

    .about-page .principle-item h3 {
      margin: 0 0 4px;
      font-size: 16px;
    }

    .about-page .principle-item p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
    }

    .about-page .timeline {
      position: relative;
      max-width: 920px;
      margin: 0 auto;
      display: grid;
      gap: 20px;
    }

    .about-page .timeline::before {
      content: "";
      position: absolute;
      top: 13px;
      bottom: 13px;
      left: 19px;
      width: 2px;
      background: #B9C8DF;
    }

    .about-page .timeline-item {
      position: relative;
      padding-left: 62px;
    }

    .about-page .timeline-dot {
      position: absolute;
      top: 11px;
      left: 10px;
      width: 20px;
      height: 20px;
      border: 5px solid var(--white);
      border-radius: 50%;
      background: var(--brand);
      box-shadow: 0 0 0 1px #A9BAD4;
    }

    .about-page .timeline-content {
      padding: 22px 25px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: var(--white);
    }

    .about-page .timeline-content strong {
      color: var(--brand);
      font-size: 13px;
    }

    .about-page .timeline-content h3 {
      margin: 4px 0 6px;
      color: var(--brand-dark);
      font-size: 18px;
    }

    .about-page .timeline-content p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .about-page .trust-band {
      padding: 58px 0;
      color: var(--white);
      background: var(--brand-dark);
    }

    .about-page .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 1px;
      background: rgba(255, 255, 255, 0.2);
    }

    .about-page .trust-item {
      min-width: 0;
      padding: 26px 18px;
      background: var(--brand-dark);
      text-align: center;
    }

    .about-page .trust-item strong {
      display: block;
      color: var(--white);
      font-size: 20px;
    }

    .about-page .trust-item span {
      color: #C8D7EC;
      font-size: 13px;
    }

    .about-page .about-cta {
      padding: 70px 0;
      text-align: center;
    }

    .about-page .about-cta h2 {
      margin: 0 0 12px;
      color: var(--brand-dark);
      font-size: 32px;
    }

    .about-page .about-cta p {
      max-width: 680px;
      margin: 0 auto 24px;
      color: var(--muted);
    }

    .footer {
      color: #CBD5E5;
      background: #071A37;
    }

    .footer-main {
      padding: 54px 0 40px;
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1.1fr;
      gap: 38px;
    }

    .footer .logo {
      color: var(--white);
    }

    .footer-brand p {
      margin: 18px 0;
      color: #AEBBD0;
      font-size: 13px;
    }

    .footer-social {
      color: var(--white);
    }

    .footer h3 {
      margin: 7px 0 16px;
      color: var(--white);
      font-size: 15px;
    }

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

    .footer-links a,
    .footer-contact a,
    .footer-contact span {
      color: #B7C3D5;
      font-size: 13px;
    }

    .footer-links a:hover,
    .footer-contact a:hover {
      color: var(--white);
      text-decoration: underline;
    }

    .footer-bottom {
      min-height: 64px;
      padding: 16px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      color: #98A8BF;
      font-size: 12px;
    }

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

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

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

      .hamburger {
        display: block;
      }

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

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

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

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

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

      .topbar-contact {
        width: 100%;
        flex-wrap: wrap;
        gap: 4px 14px;
      }

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

      .header .logo {
        min-width: 0;
        max-width: 52%;
      }

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

      .header .logo span {
        overflow: hidden;
        font-size: 15px;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

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

      .about-page .about-hero {
        padding: 58px 0 62px;
      }

      .about-page .about-hero h1 {
        font-size: 34px;
      }

      .about-page .about-hero p {
        font-size: 15px;
      }

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

      .about-page .section-heading {
        margin-bottom: 28px;
      }

      .about-page .section-heading h2,
      .about-page .principle-intro h2,
      .about-page .about-cta h2 {
        font-size: 27px;
      }

      .about-page .mission-panel {
        padding: 0;
        grid-template-columns: 1fr;
      }

      .about-page .mission-item {
        padding: 24px;
      }

      .about-page .service-grid,
      .about-page .principles,
      .about-page .trust-grid {
        grid-template-columns: 1fr;
      }

      .about-page .principles {
        gap: 28px;
      }

      .about-page .trust-grid {
        gap: 0;
      }

      .about-page .trust-item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.14);
      }

      .about-page .timeline-item {
        padding-left: 50px;
      }

      .about-page .timeline-content {
        padding: 19px;
      }

      .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 30px 20px;
      }

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

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

    @media (max-width: 480px) {
      .topbar-contact {
        display: grid;
      }

      .about-page .hero-actions {
        display: grid;
      }

      .about-page .primary-action,
      .about-page .secondary-action {
        width: 100%;
      }

      .about-page .service-grid,
      .footer-main {
        grid-template-columns: 1fr;
      }

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