:root {
      --brand: #0B3D91;
      --brand-dark: #06285f;
      --brand-soft: #eaf1fc;
      --template-theme: {主题色};
      --ink: #172033;
      --muted: #667085;
      --line: #dfe5ee;
      --surface: #ffffff;
      --surface-soft: #f5f7fb;
      --success: #087a55;
      --warning: #d99920;
      --radius: 18px;
      --shadow: 0 18px 48px rgba(12, 34, 72, 0.12);
      --container: 1200px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--surface-soft);
      font-family: Inter, "Segoe UI", 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,
    a {
      -webkit-tap-highlight-color: transparent;
    }

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

    .skip-link {
      position: fixed;
      top: 12px;
      left: 12px;
      z-index: 2000;
      padding: 10px 16px;
      color: #fff;
      background: var(--brand);
      border-radius: 8px;
      transform: translateY(-150%);
      transition: transform 0.2s ease;
    }

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

    .topbar {
      color: #dbe7fb;
      background: var(--brand-dark);
      font-size: 13px;
    }

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

    .topbar-welcome {
      margin: 0;
    }

    .topbar-contact {
      display: flex;
      align-items: center;
      gap: 18px;
    }

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

    .header {
      position: relative;
      z-index: 100;
      background: rgba(255, 255, 255, 0.98);
      border-bottom: 1px solid var(--line);
      box-shadow: 0 4px 18px rgba(16, 35, 67, 0.05);
    }

    .header-inner {
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 26px;
    }

    .logo {
      min-width: 170px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--brand-dark);
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .logo img {
      width: 42px;
      height: 42px;
      object-fit: contain;
      border-radius: 10px;
    }

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

    .nav-list {
      height: 100%;
      display: flex;
      align-items: stretch;
      justify-content: center;
      gap: 2px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .nav-item {
      position: relative;
      display: flex;
      align-items: center;
    }

    .nav-link {
      height: 100%;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 0 12px;
      color: #2d3748;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: color 0.2s ease, background 0.2s ease;
    }

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

    .has-arrow::after {
      width: 6px;
      height: 6px;
      content: "";
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-2px);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      z-index: 120;
      visibility: hidden;
      opacity: 0;
      pointer-events: none;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transform: translateY(8px);
      transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    }

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

    .dropdown-heading {
      padding: 6px 9px 10px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .dropdown-panel a {
      display: block;
      padding: 9px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 650;
    }

    .dropdown-panel a:hover {
      color: var(--brand);
      background: var(--brand-soft);
    }

    .mega-menu {
      left: 50%;
      width: min(920px, calc(100vw - 44px));
      border-radius: 0 0 18px 18px;
      transform: translate(-50%, 8px);
    }

    .nav-item:hover > .dropdown-panel,
    .nav-item:focus-within > .dropdown-panel {
      visibility: visible;
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

    .nav-item:hover > .mega-menu,
    .nav-item:focus-within > .mega-menu {
      visibility: visible;
      opacity: 1;
      pointer-events: auto;
      transform: translate(-50%, 0);
    }

    .mega-grid {
      display: grid;
      grid-template-columns: 230px minmax(0, 1fr);
      gap: 20px;
      padding: 22px;
    }

    .mega-side {
      padding: 18px;
      color: #fff;
      background: linear-gradient(145deg, var(--brand), var(--brand-dark));
      border-radius: 14px;
    }

    .mega-side h3 {
      margin: 0 0 8px;
      font-size: 19px;
    }

    .mega-side p {
      margin: 0 0 16px;
      color: #dce8fb;
      font-size: 13px;
    }

    .mega-side-links {
      display: grid;
      gap: 7px;
    }

    .mega-side-links a {
      padding: 7px 9px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      font-size: 13px;
      font-weight: 700;
    }

    .mega-side-links a:hover {
      background: rgba(255, 255, 255, 0.19);
    }

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

    .mega-card {
      min-width: 0;
      display: block;
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: 12px;
      transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }

    .mega-card:hover {
      border-color: #a9bee4;
      box-shadow: 0 10px 24px rgba(11, 61, 145, 0.1);
      transform: translateY(-2px);
    }

    .mega-card img {
      width: 100%;
      height: 78px;
      margin-bottom: 9px;
      object-fit: contain;
      background: #f8fafc;
      border-radius: 8px;
    }

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

    .mega-card strong {
      display: block;
      overflow: hidden;
      color: #202a3b;
      font-size: 13px;
      white-space: nowrap;
      text-overflow: ellipsis;
    }

    .mega-card p {
      display: -webkit-box;
      overflow: hidden;
      margin: 5px 0 0;
      color: var(--muted);
      font-size: 12px;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .mega-card-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 4px 8px;
      margin-top: 7px;
      color: var(--muted);
      font-size: 11px;
    }

    .mega-footer {
      display: block;
      padding: 12px 22px;
      color: var(--brand);
      background: var(--brand-soft);
      border-radius: 0 0 17px 17px;
      font-size: 13px;
      font-weight: 800;
      text-align: right;
    }

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

    .header-btns > a {
      padding: 10px 14px;
      color: #fff;
      background: var(--brand);
      border: 1px solid var(--brand);
      border-radius: 9px;
      font-size: 13px;
      font-weight: 800;
    }

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

    .hamburger {
      width: 42px;
      height: 42px;
      display: none;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 5px;
      padding: 0;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 9px;
      cursor: pointer;
    }

    .hamburger span {
      width: 20px;
      height: 2px;
      background: var(--ink);
      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: 998;
      visibility: hidden;
      opacity: 0;
      background: rgba(6, 20, 45, 0.58);
      transition: opacity 0.25s ease, visibility 0.25s ease;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 999;
      width: min(390px, 90vw);
      height: 100dvh;
      overflow-y: auto;
      background: #fff;
      box-shadow: -18px 0 48px rgba(0, 0, 0, 0.18);
      transform: translateX(105%);
      transition: transform 0.28s ease;
    }

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

    .drawer-head {
      min-height: 74px;
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 14px 18px;
      background: var(--brand-dark);
    }

    .drawer-head > a {
      padding: 9px 11px;
      color: #fff;
      background: rgba(255, 255, 255, 0.12);
      border-radius: 8px;
      font-size: 13px;
      font-weight: 750;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      padding: 0;
      color: #fff;
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.26);
      border-radius: 9px;
      font-size: 27px;
      line-height: 1;
      cursor: pointer;
    }

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

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 4px;
      color: var(--ink);
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line);
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

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

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

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      padding-inline: 10px;
      background: #f7f9fd;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .drawer-submenu.open {
      max-height: 900px;
      padding-block: 8px;
    }

    .drawer-submenu a {
      display: block;
      padding: 9px 10px;
      color: #4f5d73;
      border-radius: 7px;
      font-size: 14px;
    }

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

    .video-detail-main {
      min-width: 0;
    }

    .video-detail-main .video-hero {
      padding: 54px 0 34px;
      color: #fff;
      background:
        radial-gradient(circle at 12% 15%, rgba(42, 112, 220, 0.42), transparent 33%),
        linear-gradient(145deg, #071a3c 0%, #0b326f 52%, #07162f 100%);
    }

    .video-detail-main .breadcrumbs {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 22px;
      color: #c6d6ed;
      font-size: 13px;
    }

    .video-detail-main .breadcrumbs a:hover {
      color: #fff;
    }

    .video-detail-main .video-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 13px;
      padding: 7px 11px;
      color: #ffe3a5;
      background: rgba(217, 153, 32, 0.15);
      border: 1px solid rgba(255, 214, 128, 0.3);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 0.07em;
    }

    .video-detail-main .video-kicker::before {
      width: 8px;
      height: 8px;
      content: "";
      background: #f1b844;
      border-radius: 50%;
      box-shadow: 0 0 0 5px rgba(241, 184, 68, 0.12);
    }

    .video-detail-main .video-title {
      max-width: 950px;
      margin: 0;
      font-size: clamp(34px, 5vw, 62px);
      line-height: 1.12;
      letter-spacing: -0.04em;
      overflow-wrap: anywhere;
    }

    .video-detail-main .video-lead {
      max-width: 820px;
      margin: 18px 0 0;
      color: #d9e4f4;
      font-size: 18px;
    }

    .video-detail-main .video-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 23px;
    }

    .video-detail-main .video-meta span {
      padding: 7px 11px;
      color: #e9f1fc;
      background: rgba(255, 255, 255, 0.09);
      border: 1px solid rgba(255, 255, 255, 0.13);
      border-radius: 999px;
      font-size: 13px;
    }

    .video-detail-main .video-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      align-items: start;
      gap: 28px;
      padding-top: 36px;
      padding-bottom: 70px;
    }

    .video-detail-main .video-primary,
    .video-detail-main .video-sidebar {
      min-width: 0;
    }

    .video-detail-main .player-frame {
      position: relative;
      min-width: 0;
      overflow: hidden;
      color: #fff;
      background: #050b16;
      border: 1px solid #17233a;
      border-radius: 20px;
      box-shadow: 0 20px 55px rgba(7, 24, 52, 0.2);
      aspect-ratio: 16 / 9;
    }

    .video-detail-main .player-frame iframe,
    .video-detail-main .player-frame video,
    .video-detail-main .player-frame embed,
    .video-detail-main .player-frame object {
      width: 100%;
      height: 100%;
      border: 0;
    }

    .video-detail-main .player-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .video-detail-main .player-frame > * {
      max-width: 100%;
    }

    .video-detail-main .player-address {
      margin-top: 10px;
      color: var(--muted);
      font-size: 12px;
      overflow-wrap: anywhere;
    }

    .video-detail-main .content-panel {
      min-width: 0;
      max-width: 100%;
      margin-top: 24px;
      padding: clamp(22px, 4vw, 38px);
      overflow-x: auto;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 12px 34px rgba(19, 40, 76, 0.07);
    }

    .video-detail-main .content-panel h2 {
      margin: 0 0 14px;
      color: var(--brand-dark);
      font-size: 26px;
    }

    .video-detail-main .video-content {
      min-width: 0;
      max-width: 100%;
      color: #344054;
      overflow-wrap: anywhere;
    }

    .video-detail-main .video-content img,
    .video-detail-main .video-content video,
    .video-detail-main .video-content iframe,
    .video-detail-main .video-content table {
      max-width: 100%;
    }

    .video-detail-main .video-content table {
      display: block;
      overflow-x: auto;
      border-collapse: collapse;
    }

    .video-detail-main .video-content a {
      color: var(--brand);
      text-decoration: underline;
    }

    .video-detail-main .tag-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 9px;
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--line);
    }

    .video-detail-main .tag-label {
      color: var(--ink);
      font-weight: 800;
    }

    .video-detail-main .video-tags {
      color: var(--brand);
      font-size: 14px;
      overflow-wrap: anywhere;
    }

    .video-detail-main .side-panel {
      margin-bottom: 20px;
      padding: 22px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
      box-shadow: 0 10px 28px rgba(19, 40, 76, 0.06);
    }

    .video-detail-main .side-panel h2 {
      margin: 0 0 12px;
      color: var(--brand-dark);
      font-size: 19px;
    }

    .video-detail-main .side-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .video-detail-main .category-links {
      display: grid;
      gap: 8px;
      margin-top: 16px;
    }

    .video-detail-main .category-links a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 10px 12px;
      color: var(--brand);
      background: var(--brand-soft);
      border-radius: 9px;
      font-size: 14px;
      font-weight: 750;
    }

    .video-detail-main .category-links a::after {
      content: "→";
    }

    .video-detail-main .notice-panel {
      color: #fff;
      background: linear-gradient(145deg, var(--brand), var(--brand-dark));
      border-color: transparent;
    }

    .video-detail-main .notice-panel h2,
    .video-detail-main .notice-panel p {
      color: #fff;
    }

    .video-detail-main .notice-panel p {
      opacity: 0.84;
    }

    .video-detail-main .notice-panel a {
      display: inline-flex;
      margin-top: 16px;
      padding: 10px 14px;
      color: var(--brand-dark);
      background: #fff;
      border-radius: 9px;
      font-size: 13px;
      font-weight: 800;
    }

    .video-detail-main .related-section {
      padding: 66px 0 76px;
      background: #fff;
      border-top: 1px solid var(--line);
    }

    .video-detail-main .section-heading {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 25px;
    }

    .video-detail-main .section-heading p {
      margin: 0 0 6px;
      color: var(--brand);
      font-size: 12px;
      font-weight: 850;
      text-transform: uppercase;
      letter-spacing: 0.09em;
    }

    .video-detail-main .section-heading h2 {
      margin: 0;
      color: var(--brand-dark);
      font-size: clamp(27px, 4vw, 38px);
      line-height: 1.2;
    }

    .video-detail-main .related-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 20px;
    }

    .video-detail-main .related-card {
      min-width: 0;
      overflow: hidden;
      background: var(--surface-soft);
      border: 1px solid var(--line);
      border-radius: 15px;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .video-detail-main .related-card:hover {
      box-shadow: 0 16px 34px rgba(11, 61, 145, 0.12);
      transform: translateY(-4px);
    }

    .video-detail-main .related-cover {
      position: relative;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #0a1630;
    }

    .video-detail-main .related-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }

    .video-detail-main .related-card:hover .related-cover img {
      transform: scale(1.04);
    }

    .video-detail-main .play-badge {
      position: absolute;
      left: 14px;
      bottom: 14px;
      padding: 6px 10px;
      color: #fff;
      background: rgba(4, 14, 32, 0.82);
      border-radius: 999px;
      font-size: 12px;
      font-weight: 750;
    }

    .video-detail-main .related-body {
      padding: 17px;
    }

    .video-detail-main .related-body h3 {
      display: -webkit-box;
      overflow: hidden;
      margin: 0;
      color: #202a3b;
      font-size: 17px;
      line-height: 1.4;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .video-detail-main .related-body p {
      display: -webkit-box;
      overflow: hidden;
      margin: 9px 0 0;
      color: var(--muted);
      font-size: 13px;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
    }

    .video-detail-main .related-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-top: 14px;
      color: var(--brand);
      font-size: 12px;
      font-weight: 800;
    }

    .footer {
      color: #cbd6e8;
      background: #07162f;
    }

    .footer-main {
      display: grid;
      grid-template-columns: 1.45fr repeat(3, 1fr);
      gap: 46px;
      padding-top: 58px;
      padding-bottom: 42px;
    }

    .footer .logo {
      color: #fff;
    }

    .footer-brand p {
      max-width: 410px;
      margin: 18px 0 0;
      color: #9fb0c8;
      font-size: 14px;
    }

    .footer h3 {
      margin: 7px 0 16px;
      color: #fff;
      font-size: 15px;
    }

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

    .footer-links a,
    .footer-contact a {
      color: #acbbd0;
      font-size: 14px;
    }

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

    .footer-social {
      margin-top: 8px;
      color: #fff;
    }

    .footer-bottom {
      min-height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      color: #8496b0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 13px;
    }

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

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

    @media (max-width: 1100px) {
      .main-nav {
        display: none;
      }

      .hamburger {
        display: flex;
      }

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

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

      .video-detail-main .video-layout {
        grid-template-columns: minmax(0, 1fr) 285px;
      }

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

    @media (max-width: 820px) {
      .topbar-inner {
        padding-block: 8px;
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
      }

      .topbar-contact {
        flex-wrap: wrap;
        gap: 5px 15px;
      }

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

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

      .logo {
        min-width: 0;
      }

      .video-detail-main .video-hero {
        padding: 42px 0 28px;
      }

      .video-detail-main .video-layout {
        grid-template-columns: 1fr;
      }

      .video-detail-main .video-sidebar {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 18px;
      }

      .video-detail-main .side-panel {
        margin-bottom: 0;
      }

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

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

      .logo span {
        max-width: 155px;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
      }

      .video-detail-main .video-title {
        font-size: 34px;
      }

      .video-detail-main .video-lead {
        font-size: 16px;
      }

      .video-detail-main .video-layout {
        padding-top: 22px;
        padding-bottom: 48px;
      }

      .video-detail-main .player-frame {
        border-radius: 12px;
      }

      .video-detail-main .content-panel {
        margin-top: 18px;
        padding: 20px;
        border-radius: 13px;
      }

      .video-detail-main .video-sidebar {
        grid-template-columns: 1fr;
      }

      .video-detail-main .section-heading {
        align-items: flex-start;
        flex-direction: column;
      }

      .video-detail-main .related-grid {
        grid-template-columns: 1fr;
      }

      .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-top: 44px;
      }

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

      .footer-bottom-links {
        flex-wrap: wrap;
      }
    }