:root {
      --theme: #0B3D91;
      --theme-dark: #072b68;
      --theme-soft: #eaf1fb;
      --accent: #d61f69;
      --text: #172033;
      --muted: #667085;
      --line: #e4e7ec;
      --surface: #ffffff;
      --background: #f5f7fa;
      --success: #16805b;
      --shadow: 0 12px 32px rgba(23, 32, 51, 0.09);
      --container: 1240px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--text);
      background: var(--background);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      font-size: 15px;
      line-height: 1.7;
    }

    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: #dce8fb;
      background: #071b3f;
      font-size: 13px;
    }

    .topbar-inner {
      min-height: 38px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

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

    .topbar a {
      transition: color 0.2s ease;
    }

    .topbar a:hover,
    .topbar a:focus-visible {
      color: #ffffff;
    }

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

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

    .logo {
      min-width: 180px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--theme);
      font-size: 20px;
      font-weight: 800;
      line-height: 1.2;
    }

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

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

    .nav-list {
      height: 100%;
      margin: 0;
      padding: 0;
      display: flex;
      align-items: stretch;
      justify-content: center;
      list-style: none;
    }

    .nav-item {
      position: static;
      display: flex;
      align-items: stretch;
    }

    .nav-link {
      position: relative;
      padding: 0 14px;
      display: flex;
      align-items: center;
      gap: 6px;
      color: #344054;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: color 0.2s ease;
    }

    .nav-link::after {
      position: absolute;
      right: 14px;
      bottom: 15px;
      left: 14px;
      height: 2px;
      content: "";
      background: var(--theme);
      transform: scaleX(0);
      transition: transform 0.2s ease;
    }

    .nav-link.has-arrow {
      padding-right: 23px;
    }

    .nav-link.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);
      transition: transform 0.2s 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);
    }

    .nav-item:hover .nav-link.has-arrow::before,
    .nav-item:focus-within .nav-link.has-arrow::before {
      transform: translateY(-20%) rotate(225deg);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      z-index: 20;
      visibility: hidden;
      opacity: 0;
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transform: translateY(8px);
      transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
      pointer-events: none;
    }

    .dropdown-panel {
      width: 320px;
      margin-left: -20px;
      padding: 18px;
      border-radius: 0 0 6px 6px;
    }

    .mega-menu {
      right: max(20px, calc((100vw - var(--container)) / 2));
      left: max(20px, calc((100vw - var(--container)) / 2));
      max-height: calc(100vh - 120px);
      padding: 24px;
      overflow-y: auto;
      border-radius: 0 0 6px 6px;
    }

    .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-title {
      margin-bottom: 8px;
      display: block;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
    }

    .dropdown-panel > a:not(.dropdown-main) {
      padding: 9px 0;
      display: block;
      color: #344054;
      border-bottom: 1px solid #eef0f3;
      font-size: 14px;
    }

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

    .dropdown-main,
    .mega-footer {
      margin-top: 14px;
      padding-top: 13px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: var(--theme);
      border-top: 1px solid var(--line);
      font-weight: 800;
    }

    .mega-head {
      margin-bottom: 18px;
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 20px;
    }

    .mega-head strong {
      color: var(--theme);
      font-size: 20px;
    }

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

    .mega-categories {
      margin-bottom: 18px;
      padding-bottom: 16px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      border-bottom: 1px solid var(--line);
    }

    .mega-categories a {
      padding: 6px 12px;
      color: #344054;
      background: #f2f4f7;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
    }

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

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

    .mega-card {
      min-width: 0;
      padding: 14px;
      color: #344054;
      background: #f8fafc;
      border: 1px solid #edf0f4;
      border-radius: 6px;
      transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
    }

    .mega-card:hover {
      background: #ffffff;
      border-color: #b8c9e5;
      transform: translateY(-2px);
    }

    .mega-card-top {
      display: flex;
      align-items: center;
      gap: 11px;
    }

    .mega-card-top img {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      object-fit: contain;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 4px;
    }

    .mega-card strong {
      display: block;
      color: var(--text);
      font-size: 14px;
    }

    .mega-card p {
      margin: 9px 0 0;
      color: var(--muted);
      display: -webkit-box;
      overflow: hidden;
      font-size: 12px;
      line-height: 1.6;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .mega-rating,
    .mega-video-duration {
      display: block;
      color: var(--accent);
      font-size: 12px;
      font-weight: 700;
    }

    .mega-meta {
      margin-top: 10px;
      display: flex;
      flex-wrap: wrap;
      gap: 6px 10px;
      color: var(--muted);
      font-size: 11px;
    }

    .mega-video-card {
      padding: 0;
      overflow: hidden;
    }

    .mega-video-card > img {
      width: 100%;
      height: 112px;
      object-fit: cover;
    }

    .mega-video-copy {
      padding: 12px;
    }

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

    .member-entry {
      display: flex;
      align-items: center;
      color: var(--theme);
      font-size: 14px;
      font-weight: 700;
    }

    .account-entry {
      min-height: 40px;
      padding: 8px 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      background: var(--theme);
      border-radius: 4px;
      font-weight: 800;
      transition: background 0.2s ease;
    }

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

    .hamburger {
      width: 42px;
      height: 42px;
      padding: 10px;
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      border-radius: 4px;
      cursor: pointer;
    }

    .hamburger span {
      width: 100%;
      height: 2px;
      margin: 4px 0;
      display: block;
      background: var(--text);
      transition: transform 0.2s ease, opacity 0.2s ease;
    }

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

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

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

    .drawer-overlay {
      position: fixed;
      inset: 0;
      z-index: 80;
      visibility: hidden;
      opacity: 0;
      background: rgba(7, 19, 42, 0.62);
      transition: opacity 0.25s ease, visibility 0.25s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 90;
      width: min(390px, 92vw);
      height: 100vh;
      overflow-y: auto;
      background: #ffffff;
      box-shadow: -18px 0 50px rgba(7, 19, 42, 0.18);
      transform: translateX(105%);
      transition: transform 0.25s ease;
    }

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

    .drawer-head {
      min-height: 70px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--theme);
      border-bottom: 1px solid var(--line);
      font-weight: 700;
    }

    .drawer-head > a {
      color: #ffffff;
      background: var(--theme);
      padding: 7px 13px;
      border-radius: 4px;
    }

    .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: 10px 18px 30px;
    }

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 50px;
      padding: 12px 2px;
      display: flex;
      align-items: center;
      text-align: left;
      color: var(--text);
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      font-weight: 800;
      cursor: pointer;
    }

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

    .drawer-toggle::after {
      position: absolute;
      right: 5px;
      width: 8px;
      height: 8px;
      content: "";
      border-right: 2px solid var(--muted);
      border-bottom: 2px solid var(--muted);
      transform: rotate(45deg);
      transition: transform 0.2s ease;
    }

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

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: #f7f9fc;
      transition: max-height 0.3s ease;
    }

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

    .drawer-submenu a {
      padding: 10px 14px;
      display: block;
      color: #475467;
      border-bottom: 1px solid #e9edf3;
      font-size: 14px;
    }

    .tag-page {
      min-height: 620px;
    }

    .tag-page .tag-hero {
      padding: 62px 0 54px;
      color: #ffffff;
      background:
        linear-gradient(rgba(7, 43, 104, 0.94), rgba(11, 61, 145, 0.94)),
        radial-gradient(circle at 85% 15%, rgba(214, 31, 105, 0.38), transparent 32%);
    }

    .tag-page .breadcrumb {
      margin-bottom: 22px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      color: #dce8fb;
      font-size: 13px;
    }

    .tag-page .breadcrumb a:hover {
      color: #ffffff;
      text-decoration: underline;
    }

    .tag-page .tag-kicker {
      margin-bottom: 12px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #ffffff;
      font-size: 13px;
      font-weight: 800;
    }

    .tag-page .tag-kicker::before {
      width: 22px;
      height: 3px;
      content: "";
      background: #ff4f91;
    }

    .tag-page .tag-hero h1 {
      max-width: 850px;
      margin: 0;
      font-size: clamp(34px, 5vw, 56px);
      line-height: 1.2;
      letter-spacing: 0;
      overflow-wrap: anywhere;
    }

    .tag-page .tag-hero p {
      max-width: 720px;
      margin: 16px 0 0;
      color: #dce8fb;
      font-size: 16px;
    }

    .tag-page .tag-count {
      margin-top: 24px;
      padding: 8px 13px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #ffffff;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.24);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 700;
    }

    .tag-page .tag-content {
      padding: 52px 0 72px;
    }

    .tag-page .section-heading {
      margin-bottom: 22px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
    }

    .tag-page .section-heading h2 {
      margin: 0;
      color: var(--text);
      font-size: 28px;
      line-height: 1.3;
      letter-spacing: 0;
    }

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

    .tag-page .tag-article-list {
      display: grid;
      gap: 18px;
    }

    .tag-page .tag-article-card {
      min-width: 0;
      display: grid;
      grid-template-columns: 300px minmax(0, 1fr);
      overflow: hidden;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 6px;
      box-shadow: 0 6px 18px rgba(23, 32, 51, 0.04);
      transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    }

    .tag-page .tag-article-card:hover {
      border-color: #b9c9e2;
      box-shadow: var(--shadow);
      transform: translateY(-2px);
    }

    .tag-page .article-cover {
      min-height: 230px;
      overflow: hidden;
      background: #e8edf5;
    }

    .tag-page .article-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }

    .tag-page .tag-article-card:hover .article-cover img {
      transform: scale(1.035);
    }

    .tag-page .article-body {
      min-width: 0;
      padding: 24px 26px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .tag-page .article-label {
      margin-bottom: 9px;
      color: var(--accent);
      font-size: 12px;
      font-weight: 800;
    }

    .tag-page .article-body h3 {
      margin: 0;
      color: var(--text);
      font-size: 22px;
      line-height: 1.45;
      letter-spacing: 0;
      overflow-wrap: anywhere;
    }

    .tag-page .article-body h3 a:hover {
      color: var(--theme);
    }

    .tag-page .article-summary {
      margin: 10px 0 15px;
      color: var(--muted);
      display: -webkit-box;
      overflow: hidden;
      line-height: 1.75;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
    }

    .tag-page .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 18px;
      color: #7b8494;
      font-size: 12px;
    }

    .tag-page .article-meta span {
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .tag-page .article-actions {
      margin-top: 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .tag-page .article-tags {
      min-width: 0;
      color: var(--theme);
      font-size: 12px;
      overflow-wrap: anywhere;
    }

    .tag-page .read-more {
      min-height: 38px;
      padding: 7px 14px;
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      background: var(--theme);
      border-radius: 4px;
      font-size: 13px;
      font-weight: 800;
    }

    .tag-page .read-more:hover {
      background: var(--theme-dark);
    }

    .tag-page .pagination {
      margin-top: 34px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .tag-page .pagination a {
      min-width: 40px;
      min-height: 40px;
      padding: 7px 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #344054;
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 4px;
      font-weight: 700;
    }

    .tag-page .pagination a:hover,
    .tag-page .pagination a.active,
    .tag-page .pagination a.current {
      color: #ffffff;
      background: var(--theme);
      border-color: var(--theme);
    }

    .tag-page .tag-discovery {
      margin-top: 46px;
      padding: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background: #eaf1fb;
      border-left: 4px solid var(--accent);
      border-radius: 4px;
    }

    .tag-page .tag-discovery h2 {
      margin: 0 0 6px;
      font-size: 21px;
      letter-spacing: 0;
    }

    .tag-page .tag-discovery p {
      margin: 0;
      color: var(--muted);
    }

    .tag-page .tag-discovery a {
      min-height: 42px;
      padding: 9px 17px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      background: var(--accent);
      border-radius: 4px;
      font-weight: 800;
      white-space: nowrap;
    }

    .footer {
      color: #cdd8e9;
      background: #081a39;
    }

    .footer-main {
      padding: 58px 0 44px;
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 42px;
    }

    .footer .logo {
      color: #ffffff;
    }

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

    .footer h2 {
      margin: 5px 0 17px;
      color: #ffffff;
      font-size: 16px;
      letter-spacing: 0;
    }

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

    .footer-links a,
    .footer-contact a,
    .footer-social a,
    .footer-bottom a {
      transition: color 0.2s ease;
    }

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

    .footer-social {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
      color: #ffffff;
      font-size: 13px;
      font-weight: 700;
    }

    .footer-contact span {
      color: #aebbd0;
    }

    .footer-bottom {
      min-height: 68px;
      padding: 16px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      color: #93a4bd;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 13px;
    }

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

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

      .header-inner {
        min-height: 70px;
      }

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

      .hamburger {
        display: block;
      }

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

    @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: 2px;
      }

      .topbar-contact {
        width: 100%;
        flex-wrap: wrap;
        gap: 2px 14px;
      }

      .header .logo {
        min-width: 0;
        font-size: 17px;
      }

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

      .header-btns .member-entry,
      .header-btns .account-entry {
        display: none;
      }

      .tag-page .tag-hero {
        padding: 42px 0 38px;
      }

      .tag-page .tag-hero h1 {
        font-size: 36px;
      }

      .tag-page .tag-content {
        padding: 36px 0 52px;
      }

      .tag-page .section-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
      }

      .tag-page .section-heading h2 {
        font-size: 24px;
      }

      .tag-page .tag-article-card {
        grid-template-columns: 1fr;
      }

      .tag-page .article-cover {
        min-height: 0;
        aspect-ratio: 16 / 9;
      }

      .tag-page .article-body {
        padding: 20px;
      }

      .tag-page .article-body h3 {
        font-size: 19px;
      }

      .tag-page .article-actions {
        align-items: flex-start;
        flex-direction: column;
      }

      .tag-page .tag-discovery {
        padding: 22px;
        align-items: flex-start;
        flex-direction: column;
      }

      .footer-main {
        padding: 44px 0 34px;
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-bottom {
        padding: 20px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 9px;
      }
    }

    @media (max-width: 420px) {
      .tag-page .tag-hero h1 {
        font-size: 31px;
      }

      .tag-page .article-body {
        padding: 17px;
      }

      .tag-page .article-meta {
        gap: 6px 12px;
      }

      .drawer-head {
        gap: 8px;
      }
    }