:root {
      --theme: #0B3D91;
      --theme-token: {主题色};
      --theme-dark: #072a64;
      --theme-light: #eaf1fc;
      --accent: #c62828;
      --ink: #172033;
      --muted: #667085;
      --line: #dfe5ef;
      --surface: #ffffff;
      --background: #f5f7fb;
      --shadow: 0 16px 40px rgba(11, 61, 145, .12);
      --radius: 18px;
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

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

    body.drawer-locked {
      overflow: hidden;
    }

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

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

    button,
    input,
    select {
      font: inherit;
    }

    button {
      color: inherit;
    }

    .container {
      width: min(calc(100% - 32px), var(--container));
      margin-inline: auto;
    }

    .skip-link {
      position: fixed;
      top: 10px;
      left: 10px;
      z-index: 9999;
      padding: 10px 16px;
      color: #fff;
      background: var(--theme);
      border-radius: 8px;
      transform: translateY(-160%);
      transition: transform .2s ease;
    }

    .skip-link:focus {
      transform: translateY(0);
    }

    .topbar {
      color: #e8effb;
      background: var(--theme-dark);
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .topbar-contact {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .topbar a:hover {
      color: #fff;
      text-decoration: underline;
    }

    .header {
      position: relative;
      z-index: 100;
      background: rgba(255, 255, 255, .98);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 5px 18px rgba(20, 36, 66, .05);
    }

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

    .logo {
      min-width: 170px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 19px;
      font-weight: 800;
    }

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

    .main-nav {
      min-width: 0;
      margin-left: auto;
    }

    .nav-list {
      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;
      min-height: 78px;
      padding: 0 13px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #26344d;
      font-size: 15px;
      font-weight: 650;
      white-space: nowrap;
    }

    .nav-link::after {
      position: absolute;
      right: 13px;
      bottom: 0;
      left: 13px;
      height: 3px;
      content: "";
      background: var(--theme);
      transform: scaleX(0);
      transition: transform .2s ease;
    }

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

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

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

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

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      z-index: 120;
      visibility: hidden;
      opacity: 0;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transform: translateY(8px);
      pointer-events: none;
      transition: opacity .2s ease, transform .2s ease, visibility .2s;
    }

    .dropdown-panel {
      width: 310px;
      margin-left: -35px;
      padding: 12px;
      border-radius: 0 0 14px 14px;
    }

    .dropdown-panel > a {
      padding: 10px 12px;
      display: block;
      color: #344054;
      border-radius: 8px;
      font-size: 14px;
    }

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

    .dropdown-panel .dropdown-more {
      margin-top: 7px;
      color: var(--theme);
      border-top: 1px solid var(--line);
      border-radius: 0;
      font-weight: 700;
    }

    .mega-menu {
      right: max(16px, calc((100vw - var(--container)) / 2));
      left: max(16px, calc((100vw - var(--container)) / 2));
      border-radius: 0 0 18px 18px;
      overflow: hidden;
    }

    .mega-inner {
      padding: 22px;
    }

    .mega-heading {
      margin-bottom: 16px;
      padding-bottom: 14px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
      border-bottom: 1px solid var(--line);
    }

    .mega-heading strong {
      color: var(--theme-dark);
      font-size: 18px;
    }

    .mega-heading span {
      color: var(--muted);
      font-size: 13px;
    }

    .mega-categories {
      margin-bottom: 16px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .mega-categories a {
      padding: 6px 11px;
      color: var(--theme);
      background: var(--theme-light);
      border: 1px solid #cfddf4;
      border-radius: 999px;
      font-size: 13px;
    }

    .mega-categories a:hover {
      color: #fff;
      background: var(--theme);
    }

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

    .mega-card {
      min-width: 0;
      padding: 13px;
      display: grid;
      grid-template-columns: 54px minmax(0, 1fr);
      gap: 5px 12px;
      align-items: center;
      background: #f8fafc;
      border: 1px solid #e7ebf2;
      border-radius: 12px;
      transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
    }

    .mega-card:hover {
      border-color: #a9bee0;
      box-shadow: 0 10px 25px rgba(11, 61, 145, .1);
      transform: translateY(-2px);
    }

    .mega-card img {
      width: 54px;
      height: 54px;
      grid-row: 1 / span 3;
      object-fit: contain;
      background: #fff;
      border-radius: 9px;
    }

    .mega-card strong,
    .mega-card p,
    .mega-meta {
      min-width: 0;
    }

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

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

    .mega-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 3px 9px;
      color: var(--muted);
      font-size: 11px;
    }

    .mega-video,
    .mega-product {
      align-items: start;
    }

    .mega-video img,
    .mega-product img {
      object-fit: cover;
    }

    .mega-footer {
      padding: 12px 20px;
      display: block;
      color: #fff;
      background: var(--theme);
      text-align: center;
      font-weight: 700;
    }

    .mega-footer:hover {
      background: var(--theme-dark);
    }

    .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;
    }

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

    .open-account {
      padding: 9px 17px;
      color: #fff;
      background: var(--theme);
      border-radius: 9px;
      font-size: 14px;
      font-weight: 750;
      transition: background .2s ease, transform .2s ease;
    }

    .open-account:hover {
      background: var(--theme-dark);
      transform: translateY(-1px);
    }

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

    .hamburger span {
      width: 100%;
      height: 2px;
      margin: 5px 0;
      display: block;
      background: var(--theme-dark);
      transition: transform .2s ease, opacity .2s ease;
    }

    .hamburger.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

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

    .hamburger.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 500;
      visibility: hidden;
      opacity: 0;
      background: rgba(7, 19, 39, .58);
      transition: opacity .25s ease, visibility .25s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      bottom: 0;
      z-index: 510;
      width: min(390px, 90vw);
      overflow-y: auto;
      background: #fff;
      box-shadow: -16px 0 40px rgba(0, 0, 0, .18);
      transform: translateX(105%);
      transition: transform .25s ease;
    }

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

    .drawer-head {
      position: sticky;
      top: 0;
      z-index: 2;
      min-height: 68px;
      padding: 12px 16px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      background: var(--theme-dark);
    }

    .drawer-head > a {
      padding: 7px 11px;
      border: 1px solid rgba(255, 255, 255, .35);
      border-radius: 7px;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      color: #fff;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, .35);
      border-radius: 50%;
      font-size: 25px;
      line-height: 1;
      cursor: pointer;
    }

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

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      padding: 14px 5px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #1d2939;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      text-align: left;
      font-weight: 700;
      cursor: pointer;
    }

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

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

    .drawer-submenu {
      max-height: 0;
      padding-left: 12px;
      overflow: hidden;
      background: #f8fafc;
      transition: max-height .3s ease;
    }

    .drawer-submenu.open {
      max-height: 800px;
    }

    .drawer-submenu a {
      padding: 10px 12px;
      display: block;
      color: #475467;
      border-bottom: 1px dashed #dde3ed;
      font-size: 14px;
    }

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

    .productlist-main {
      min-height: 640px;
    }

    .productlist-main .page-intro {
      position: relative;
      overflow: hidden;
      padding: 66px 0 58px;
      color: #fff;
      background:
        radial-gradient(circle at 82% 20%, rgba(255, 255, 255, .16), transparent 24%),
        linear-gradient(135deg, var(--theme-dark), var(--theme) 62%, #1f61bb);
    }

    .productlist-main .page-intro::after {
      position: absolute;
      right: -80px;
      bottom: -140px;
      width: 360px;
      height: 360px;
      content: "";
      border: 70px solid rgba(255, 255, 255, .06);
      border-radius: 50%;
    }

    .productlist-main .breadcrumb {
      position: relative;
      z-index: 1;
      margin-bottom: 16px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      color: #d7e5fa;
      font-size: 14px;
    }

    .productlist-main .breadcrumb a:hover {
      color: #fff;
      text-decoration: underline;
    }

    .productlist-main .page-intro h1 {
      position: relative;
      z-index: 1;
      max-width: 820px;
      margin: 0 0 12px;
      font-size: clamp(32px, 5vw, 50px);
      line-height: 1.2;
    }

    .productlist-main .page-intro p {
      position: relative;
      z-index: 1;
      max-width: 760px;
      margin: 0;
      color: #e5eefc;
      font-size: 17px;
    }

    .productlist-main .catalog-section {
      padding: 28px 0 8px;
    }

    .productlist-main .catalog-box {
      padding: 22px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 10px 30px rgba(25, 45, 80, .06);
    }

    .productlist-main .section-heading {
      margin-bottom: 18px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 18px;
    }

    .productlist-main .section-heading h2 {
      margin: 0;
      color: var(--theme-dark);
      font-size: 25px;
    }

    .productlist-main .section-heading p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .productlist-main .category-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .productlist-main .category-chip {
      padding: 9px 15px;
      color: #344054;
      background: #f7f9fc;
      border: 1px solid var(--line);
      border-radius: 999px;
      font-size: 14px;
      font-weight: 650;
      transition: color .2s ease, background .2s ease, border-color .2s ease;
    }

    .productlist-main .category-chip:hover {
      color: #fff;
      background: var(--theme);
      border-color: var(--theme);
    }

    .productlist-main .products-section {
      padding: 38px 0 68px;
    }

    .productlist-main .product-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 22px;
    }

    .productlist-main .product-card {
      min-width: 0;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 10px 30px rgba(24, 42, 76, .06);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .productlist-main .product-card:hover {
      border-color: #b4c5e1;
      box-shadow: 0 18px 42px rgba(11, 61, 145, .13);
      transform: translateY(-5px);
    }

    .productlist-main .product-image {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #e9eef6;
    }

    .productlist-main .product-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }

    .productlist-main .product-card:hover .product-image img {
      transform: scale(1.035);
    }

    .productlist-main .product-category {
      position: absolute;
      top: 14px;
      left: 14px;
      padding: 5px 10px;
      color: #fff;
      background: rgba(7, 42, 100, .9);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      backdrop-filter: blur(5px);
    }

    .productlist-main .product-body {
      min-width: 0;
      padding: 21px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .productlist-main .product-body h2 {
      margin: 0 0 10px;
      color: #172033;
      font-size: 21px;
      line-height: 1.4;
    }

    .productlist-main .product-body h2 a:hover {
      color: var(--theme);
    }

    .productlist-main .product-summary {
      margin: 0 0 18px;
      color: var(--muted);
      display: -webkit-box;
      overflow: hidden;
      line-height: 1.75;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
    }

    .productlist-main .product-meta {
      margin-top: auto;
      padding-top: 14px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 7px 14px;
      color: #778196;
      border-top: 1px solid #edf0f5;
      font-size: 13px;
    }

    .productlist-main .product-action {
      margin-top: 16px;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--theme);
      font-weight: 750;
    }

    .productlist-main .product-action::after {
      content: "→";
      transition: transform .2s ease;
    }

    .productlist-main .product-action:hover::after {
      transform: translateX(4px);
    }

    .productlist-main .pagination {
      margin-top: 38px;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .productlist-main .pagination a {
      min-width: 42px;
      height: 42px;
      padding: 0 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #344054;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 9px;
      font-weight: 700;
    }

    .productlist-main .pagination a:hover,
    .productlist-main .pagination a.active,
    .productlist-main .pagination a.current {
      color: #fff;
      background: var(--theme);
      border-color: var(--theme);
    }

    .productlist-main .catalog-note {
      margin-top: 34px;
      padding: 18px 22px;
      color: #475467;
      background: #eef4fd;
      border-left: 4px solid var(--theme);
      border-radius: 0 12px 12px 0;
      font-size: 14px;
    }

    .footer {
      color: #cfd8e8;
      background: #071a38;
    }

    .footer-main {
      padding: 56px 0 38px;
      display: grid;
      grid-template-columns: 1.45fr 1fr 1fr 1fr;
      gap: 38px;
    }

    .footer .logo {
      color: #fff;
    }

    .footer-brand p {
      max-width: 420px;
      margin: 18px 0 0;
      color: #aebbd0;
      font-size: 14px;
    }

    .footer h2 {
      margin: 0 0 16px;
      color: #fff;
      font-size: 16px;
    }

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

    .footer-links a,
    .footer-contact a {
      color: #b8c5d9;
      font-size: 14px;
    }

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

    .social-link {
      margin-top: 5px;
    }

    .footer-bottom {
      min-height: 66px;
      padding: 16px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      color: #98a8c1;
      border-top: 1px solid rgba(255, 255, 255, .12);
      font-size: 13px;
    }

    .footer-bottom-links {
      display: flex;
      gap: 18px;
    }

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

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

      .hamburger {
        display: block;
      }

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

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

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

    @media (max-width: 720px) {
      .container {
        width: min(calc(100% - 24px), var(--container));
      }

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

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

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

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

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

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

      .header-btns .open-account {
        display: none;
      }

      .productlist-main .page-intro {
        padding: 45px 0 40px;
      }

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

      .productlist-main .section-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
      }

      .productlist-main .catalog-box {
        padding: 18px;
      }

      .productlist-main .product-grid {
        grid-template-columns: 1fr;
      }

      .productlist-main .products-section {
        padding-bottom: 50px;
      }

      .footer-main {
        padding-top: 42px;
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
      }
    }

    @media (max-width: 420px) {
      .header-btns {
        gap: 6px;
      }

      .hamburger {
        width: 39px;
        height: 39px;
      }

      .productlist-main .product-body {
        padding: 18px;
      }

      .productlist-main .product-body h2 {
        font-size: 19px;
      }
    }