:root {
      --theme-color: #0B3D91;
      --theme-dark: #06265e;
      --cyan: #08c7d9;
      --cyan-light: #dffafd;
      --ink: #142033;
      --muted: #64748b;
      --line: #dbe3ee;
      --surface: #f4f7fb;
      --white: #fff;
      --shadow: 0 16px 40px rgba(11, 61, 145, .12);
      --radius: 8px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

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

    body,
    button,
    input {
      font: inherit;
    }

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

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

    button {
      color: inherit;
    }

    .container {
      width: min(1180px, calc(100% - 40px));
      margin-inline: auto;
    }

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

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

    .topbar-links {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .topbar a:hover {
      color: var(--cyan);
    }

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

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      gap: 30px;
    }

    .logo {
      min-width: 190px;
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--theme-color);
      font-size: 19px;
      font-weight: 800;
    }

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

    .logo-mark {
      width: 38px;
      height: 38px;
      display: none;
      place-items: center;
      color: var(--white);
      background: var(--theme-color);
      border-radius: 6px;
      font-size: 13px;
    }

    .logo img[style*="display: none"] + .logo-mark {
      display: grid;
    }

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

    .nav-link {
      position: relative;
      padding: 0 14px;
      display: flex;
      align-items: center;
      gap: 6px;
      color: #29364a;
      font-size: 15px;
      font-weight: 650;
      white-space: nowrap;
    }

    .nav-link:not(.simple)::after {
      width: 6px;
      height: 6px;
      content: "";
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-2px);
    }

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

    .nav-item:hover > .nav-link::before,
    .nav-item:focus-within > .nav-link::before {
      position: absolute;
      right: 14px;
      bottom: 0;
      left: 14px;
      height: 3px;
      content: "";
      background: var(--cyan);
    }

    .dropdown-panel,
    .mega-menu {
      position: absolute;
      top: 100%;
      left: 0;
      z-index: 60;
      visibility: hidden;
      opacity: 0;
      background: var(--white);
      border: 1px solid var(--line);
      border-top: 3px solid var(--cyan);
      box-shadow: var(--shadow);
      transform: translateY(8px);
      transition: opacity .18s ease, transform .18s ease, visibility .18s;
    }

    .dropdown-panel {
      width: 310px;
      padding: 22px;
    }

    .mega-menu {
      width: min(720px, 80vw);
      padding: 25px;
    }

    .nav-item:nth-last-child(-n+3) .mega-menu {
      right: 0;
      left: auto;
    }

    .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;
      transform: translateY(0);
    }

    .mega-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.35fr) minmax(200px, .8fr);
      gap: 28px;
    }

    .mega-block {
      min-width: 0;
    }

    .menu-heading {
      margin: 0 0 14px;
      padding-bottom: 10px;
      color: var(--theme-color);
      border-bottom: 1px solid var(--line);
      font-size: 15px;
    }

    .menu-list {
      margin: 0;
      padding: 0;
      display: grid;
      gap: 4px;
      list-style: none;
    }

    .menu-list a {
      min-width: 0;
      padding: 9px 10px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-radius: 5px;
      color: #43516a;
      font-size: 14px;
    }

    .menu-list a:hover {
      color: var(--theme-color);
      background: var(--cyan-light);
    }

    .menu-list img {
      width: 22px;
      height: 22px;
      object-fit: contain;
    }

    .broker-mega-card,
    .video-mega-card {
      margin-bottom: 8px;
      padding: 9px;
      display: flex;
      align-items: center;
      gap: 12px;
      border: 1px solid transparent;
      border-radius: 6px;
    }

    .broker-mega-card:hover,
    .video-mega-card:hover {
      border-color: #b8eaf0;
      background: var(--cyan-light);
    }

    .broker-mega-card img {
      width: 44px;
      height: 44px;
      flex: 0 0 auto;
      object-fit: contain;
      border: 1px solid var(--line);
      border-radius: 5px;
    }

    .video-mega-card img {
      width: 72px;
      height: 44px;
      flex: 0 0 auto;
      object-fit: cover;
      border-radius: 5px;
    }

    .broker-mega-card span,
    .video-mega-card span {
      min-width: 0;
      display: grid;
    }

    .mega-title {
      overflow: hidden;
      color: #243149;
      font-size: 14px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mega-meta {
      overflow: hidden;
      color: var(--muted);
      font-size: 12px;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

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

    .header-btns > span {
      color: var(--theme-color);
      font-size: 14px;
      font-weight: 700;
    }

    .account-link {
      min-height: 38px;
      padding: 8px 17px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      background: var(--theme-color);
      border-radius: 5px;
      font-size: 14px;
      font-weight: 700;
    }

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

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

    .hamburger span {
      width: 20px;
      height: 2px;
      background: var(--ink);
      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: 80;
      visibility: hidden;
      opacity: 0;
      background: rgba(6, 20, 44, .58);
      transition: opacity .2s ease, visibility .2s;
    }

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

    .mobile-drawer {
      position: fixed;
      top: 0;
      right: 0;
      z-index: 90;
      width: min(390px, 90vw);
      height: 100dvh;
      overflow-y: auto;
      background: var(--white);
      box-shadow: -20px 0 45px rgba(5, 27, 68, .18);
      transform: translateX(105%);
      transition: transform .25s ease;
    }

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

    .drawer-head {
      min-height: 72px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 13px;
      color: var(--white);
      background: var(--theme-color);
    }

    .drawer-head > a {
      padding: 7px 12px;
      border: 1px solid rgba(255, 255, 255, .55);
      border-radius: 4px;
      font-weight: 700;
    }

    .drawer-close {
      width: 38px;
      height: 38px;
      margin-left: auto;
      padding: 0;
      color: var(--white);
      background: transparent;
      border: 0;
      font-size: 30px;
      line-height: 1;
      cursor: pointer;
    }

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

    .drawer-link,
    .drawer-toggle {
      width: 100%;
      min-height: 49px;
      padding: 12px 4px;
      display: flex;
      align-items: center;
      border: 0;
      border-bottom: 1px solid var(--line);
      background: transparent;
      font-weight: 700;
      text-align: left;
      cursor: pointer;
    }

    .drawer-toggle::after {
      width: 8px;
      height: 8px;
      margin-left: auto;
      content: "";
      border-right: 1.5px solid var(--muted);
      border-bottom: 1.5px solid var(--muted);
      transform: rotate(45deg);
      transition: transform .2s ease;
    }

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

    .drawer-submenu {
      max-height: 0;
      overflow: hidden;
      background: #f7f9fc;
      transition: max-height .25s ease;
    }

    .drawer-submenu.open {
      max-height: 650px;
    }

    .drawer-submenu a {
      padding: 10px 15px;
      display: block;
      color: #53627a;
      border-bottom: 1px solid #e8edf4;
      font-size: 14px;
    }

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

    .video-page {
      min-width: 0;
    }

    .video-page .video-heading {
      padding: 58px 0 48px;
      color: var(--white);
      background:
        linear-gradient(rgba(6, 38, 94, .94), rgba(11, 61, 145, .91)),
        radial-gradient(circle at 85% 20%, rgba(8, 199, 217, .45), transparent 34%);
    }

    .video-page .breadcrumb {
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      color: #cde5ff;
      font-size: 14px;
    }

    .video-page .breadcrumb a:hover {
      color: var(--cyan);
    }

    .video-page .heading-content {
      max-width: 760px;
      margin-inline: auto;
      text-align: center;
    }

    .video-page .heading-content h1 {
      margin: 0;
      font-size: clamp(32px, 5vw, 52px);
      line-height: 1.15;
    }

    .video-page .heading-content p {
      max-width: 650px;
      margin: 16px auto 0;
      color: #dcecff;
      font-size: 17px;
    }

    .video-page .category-band {
      background: var(--white);
      border-bottom: 1px solid var(--line);
    }

    .video-page .category-list {
      padding: 18px 0;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      overflow-x: auto;
      scrollbar-width: thin;
    }

    .video-page .category-list a {
      min-height: 38px;
      padding: 7px 17px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      color: #3c4b62;
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 700;
    }

    .video-page .category-list a:hover {
      color: var(--theme-color);
      background: var(--cyan-light);
      border-color: var(--cyan);
    }

    .video-page .video-content {
      padding: 48px 0 68px;
    }

    .video-page .section-head {
      margin-bottom: 24px;
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
    }

    .video-page .section-head h2 {
      margin: 0;
      color: var(--theme-dark);
      font-size: 27px;
      line-height: 1.25;
    }

    .video-page .section-head p {
      margin: 7px 0 0;
      color: var(--muted);
    }

    .video-page .video-count {
      padding: 7px 12px;
      color: var(--theme-color);
      background: var(--cyan-light);
      border-left: 3px solid var(--cyan);
      font-size: 13px;
      font-weight: 700;
      white-space: nowrap;
    }

    .video-page .video-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 24px;
    }

    .video-page .video-card {
      min-width: 0;
      overflow: hidden;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: 0 7px 22px rgba(26, 49, 86, .07);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .video-page .video-card:hover {
      border-color: #9ee8ef;
      box-shadow: var(--shadow);
      transform: translateY(-4px);
    }

    .video-page .video-cover {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #dce5f0;
    }

    .video-page .video-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }

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

    .video-page .play-icon {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 52px;
      height: 52px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: rgba(11, 61, 145, .9);
      border: 2px solid rgba(255, 255, 255, .8);
      border-radius: 50%;
      box-shadow: 0 8px 22px rgba(0, 0, 0, .25);
      transform: translate(-50%, -50%);
    }

    .video-page .play-icon::before {
      margin-left: 3px;
      content: "";
      border-top: 7px solid transparent;
      border-bottom: 7px solid transparent;
      border-left: 11px solid currentColor;
    }

    .video-page .duration {
      position: absolute;
      right: 10px;
      bottom: 9px;
      padding: 3px 7px;
      color: var(--white);
      background: rgba(10, 19, 34, .82);
      border-radius: 3px;
      font-size: 12px;
      font-weight: 700;
    }

    .video-page .video-card-body {
      padding: 19px;
    }

    .video-page .video-category {
      margin-bottom: 9px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--theme-color);
      font-size: 12px;
      font-weight: 800;
    }

    .video-page .video-category::before {
      width: 7px;
      height: 7px;
      content: "";
      background: var(--cyan);
      border-radius: 50%;
    }

    .video-page .video-card h3 {
      min-height: 52px;
      margin: 0;
      overflow: hidden;
      color: #1d2a40;
      font-size: 18px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
    }

    .video-page .video-card h3 a:hover {
      color: var(--theme-color);
    }

    .video-page .video-summary {
      min-height: 67px;
      margin: 10px 0 16px;
      overflow: hidden;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
    }

    .video-page .video-card-footer {
      padding-top: 13px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      border-top: 1px solid #edf1f6;
    }

    .video-page .video-card-footer span {
      color: var(--muted);
      font-size: 13px;
    }

    .video-page .watch-link {
      color: var(--theme-color);
      font-size: 14px;
      font-weight: 800;
      white-space: nowrap;
    }

    .video-page .watch-link:hover {
      color: #0099aa;
    }

    .video-page .pagination {
      margin-top: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 8px;
    }

    .video-page .pagination a {
      min-width: 40px;
      min-height: 40px;
      padding: 7px 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #41516a;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 5px;
      font-size: 14px;
      font-weight: 700;
    }

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

    .video-page .learning-cta {
      margin-top: 56px;
      padding: 34px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 30px;
      color: var(--white);
      background: var(--theme-dark);
      border-left: 5px solid var(--cyan);
      border-radius: var(--radius);
    }

    .video-page .learning-cta h2 {
      margin: 0 0 7px;
      font-size: 25px;
    }

    .video-page .learning-cta p {
      margin: 0;
      color: #cfe1fa;
    }

    .video-page .learning-cta a {
      min-height: 44px;
      padding: 9px 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--theme-dark);
      background: var(--cyan);
      border-radius: 5px;
      font-weight: 800;
      white-space: nowrap;
    }

    .video-page .learning-cta a:hover {
      background: var(--white);
    }

    .footer {
      color: #c8d5e8;
      background: #071a38;
    }

    .footer-main {
      padding: 54px 0 42px;
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 42px;
    }

    .footer-brand > span {
      color: var(--white);
      font-size: 21px;
      font-weight: 800;
    }

    .footer-brand p {
      max-width: 330px;
      margin: 15px 0 0;
      color: #9fb0c8;
      font-size: 14px;
    }

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

    .footer-links {
      margin: 0;
      padding: 0;
      display: grid;
      gap: 9px;
      list-style: none;
    }

    .footer-links a,
    .footer-contact a {
      color: #aebdd1;
      font-size: 14px;
    }

    .footer-links a:hover,
    .footer-contact a:hover {
      color: var(--cyan);
    }

    .footer-contact {
      display: grid;
      gap: 10px;
      color: #aebdd1;
      font-size: 14px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .12);
    }

    .footer-bottom-inner {
      min-height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      color: #879bb7;
      font-size: 13px;
    }

    @media (max-width: 1080px) {
      .main-nav {
        display: none;
      }

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

      .logo {
        margin-right: auto;
      }

      .hamburger {
        display: flex;
      }

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

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

    @media (max-width: 680px) {
      .container {
        width: min(100% - 28px, 1180px);
      }

      .topbar-inner {
        padding: 7px 0;
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
      }

      .topbar-links {
        width: 100%;
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
      }

      .logo {
        min-width: 0;
        font-size: 16px;
      }

      .logo img,
      .logo-mark {
        width: 34px;
        height: 34px;
      }

      .header-btns > span,
      .account-link {
        display: none;
      }

      .video-page .video-heading {
        padding: 42px 0 38px;
      }

      .video-page .heading-content h1 {
        font-size: 34px;
      }

      .video-page .heading-content p {
        font-size: 15px;
      }

      .video-page .category-list {
        justify-content: flex-start;
      }

      .video-page .video-content {
        padding: 38px 0 52px;
      }

      .video-page .section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }

      .video-page .video-grid {
        grid-template-columns: 1fr;
      }

      .video-page .video-card h3,
      .video-page .video-summary {
        min-height: auto;
      }

      .video-page .learning-cta {
        padding: 25px 21px;
        grid-template-columns: 1fr;
      }

      .video-page .learning-cta a {
        width: 100%;
      }

      .footer-main {
        padding: 42px 0 34px;
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-bottom-inner {
        padding: 16px 0;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 4px;
      }
    }