:root {
      --theme-color: #0B3D91;
      --theme-deep: #082B65;
      --theme-soft: #EAF1FA;
      --ink: #17263B;
      --muted: #66758A;
      --line: #E4EAF1;
      --surface: #FFFFFF;
      --page-bg: #F5F7FA;
      --radius: 16px;
      --shadow: 0 16px 42px rgba(24, 48, 81, .08);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; color: var(--ink); background: var(--page-bg); font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif; line-height: 1.65; }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button { font: inherit; }
    .container { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }

    .topbar { background: #10233D; color: #DCE5F1; font-size: 13px; }
    .topbar .container { min-height: 38px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
    .topbar-info { display: flex; align-items: center; gap: 22px; }
    .topbar a { color: #E6EDF6; }
    .topbar a:hover { color: #FFFFFF; }

    .header { position: relative; z-index: 20; background: #FFFFFF; border-bottom: 1px solid var(--line); }
    .header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .logo { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; color: var(--ink); font-weight: 750; font-size: 19px; }
    .logo img { width: 40px; height: 40px; object-fit: contain; }
    .main-nav { align-self: stretch; }
    .nav-list { display: flex; align-items: stretch; gap: 4px; height: 100%; list-style: none; padding: 0; margin: 0; }
    .nav-item { position: relative; display: flex; align-items: stretch; }
    .nav-link { display: inline-flex; align-items: center; gap: 7px; padding: 0 13px; color: #34445A; font-size: 14px; font-weight: 650; white-space: nowrap; transition: color .2s ease; }
    .nav-link:hover, .nav-item:focus-within > .nav-link { color: var(--theme-color); }
    .has-arrow::after { content: ""; width: 7px; height: 7px; 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%; left: 0; z-index: 30; visibility: hidden; opacity: 0; transform: translateY(8px); transition: opacity .18s ease, transform .18s ease, visibility .18s ease; background: #FFFFFF; border: 1px solid var(--line); border-radius: 13px; box-shadow: 0 22px 50px rgba(17, 38, 67, .15); }
    .dropdown-panel { width: 300px; padding: 18px; }
    .mega-menu { width: 650px; padding: 22px; }
    .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); }
    .mega-heading { margin: 0 0 12px; color: var(--ink); font-size: 14px; font-weight: 750; }
    .mega-list, .broker-mini, .video-mini, .product-mini { display: grid; gap: 8px; }
    .mega-list a, .broker-mini a, .video-mini a, .product-mini a { display: block; padding: 9px 10px; border-radius: 8px; color: #40516A; font-size: 13px; line-height: 1.5; transition: background .2s ease, color .2s ease; }
    .mega-list a:hover, .broker-mini a:hover, .video-mini a:hover, .product-mini a:hover { color: var(--theme-color); background: var(--theme-soft); }
    .mega-list img { display: inline-block; width: 18px; height: 18px; margin-right: 5px; vertical-align: middle; object-fit: contain; }
    .mega-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .mega-grid p:not(.mega-heading) { margin: 0 0 14px; color: var(--muted); font-size: 13px; }
    .mega-footer { display: inline-flex; margin-top: 13px; color: var(--theme-color); font-size: 13px; font-weight: 700; }
    .header-btns { display: flex; align-items: center; gap: 9px; }
    .member-btn, .open-btn { min-height: 38px; display: inline-flex; align-items: center; justify-content: center; padding: 0 14px; border-radius: 8px; font-size: 13px; font-weight: 700; white-space: nowrap; }
    .member-btn { color: var(--theme-color); background: var(--theme-soft); }
    .open-btn { color: #FFFFFF; background: var(--theme-color); }
    .member-btn:hover, .open-btn:hover { filter: brightness(.94); }
    .hamburger { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 9px; background: #FFFFFF; cursor: pointer; }
    .hamburger span { display: block; width: 20px; height: 2px; margin: 4px auto; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
    .hamburger.active span:first-child { transform: translateY(6px) rotate(45deg); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:last-child { transform: translateY(-6px) rotate(-45deg); }

    .drawer-overlay { position: fixed; inset: 0; z-index: 50; visibility: hidden; opacity: 0; background: rgba(9, 20, 36, .48); transition: opacity .22s ease, visibility .22s ease; }
    .drawer-overlay.open { visibility: visible; opacity: 1; }
    .mobile-drawer { position: fixed; top: 0; right: 0; z-index: 51; width: min(390px, 88vw); height: 100dvh; overflow-y: auto; background: #FFFFFF; box-shadow: -16px 0 42px rgba(10, 28, 51, .16); transform: translateX(105%); transition: transform .25s ease; }
    .mobile-drawer.open { transform: translateX(0); }
    .drawer-head { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: 12px; padding: 18px; background: #FFFFFF; border-bottom: 1px solid var(--line); font-weight: 750; }
    .drawer-head > span { flex: 1; }
    .drawer-head > a { color: var(--theme-color); font-size: 14px; }
    .drawer-close { width: 34px; height: 34px; border: 0; border-radius: 8px; background: var(--page-bg); color: var(--ink); font-size: 24px; line-height: 1; cursor: pointer; }
    .drawer-menu { padding: 12px 18px 28px; }
    .drawer-link, .drawer-toggle { display: flex; width: 100%; align-items: center; justify-content: space-between; padding: 13px 4px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); text-align: left; font-size: 15px; font-weight: 650; cursor: pointer; }
    .drawer-toggle::after { content: ""; width: 8px; height: 8px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); transition: transform .2s ease; }
    .drawer-toggle.active::after { transform: rotate(225deg); }
    .drawer-submenu { display: none; padding: 5px 0 9px 13px; }
    .drawer-submenu.open { display: grid; }
    .drawer-submenu a { padding: 8px 4px; color: var(--muted); font-size: 14px; }

    .ea-content-stack { min-height: 60vh; padding: 28px 0 84px; }
    .ea-content-stack .product-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
    .ea-content-stack .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin: 0 0 22px; color: var(--muted); font-size: 13px; }
    .ea-content-stack .breadcrumb a { color: var(--theme-color); }
    .ea-content-stack .breadcrumb .separator { color: #AAB5C3; }
    .ea-content-stack .product-overview { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(26px, 5vw, 64px); align-items: center; padding: clamp(22px, 4vw, 48px); border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow); }
    .ea-content-stack .product-visual { display: grid; min-width: 0; min-height: 370px; place-items: center; padding: 28px; overflow: hidden; border-radius: 16px; background: linear-gradient(145deg, #F1F5FA, #E7EEF7); }
    .ea-content-stack .product-visual img { width: 100%; max-height: 440px; object-fit: contain; }
    .ea-content-stack .product-info { min-width: 0; }
    .ea-content-stack .eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px; color: var(--theme-color); font-size: 13px; font-weight: 750; letter-spacing: .04em; }
    .ea-content-stack .eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }
    .ea-content-stack .product-title { margin: 0; color: var(--ink); font-size: clamp(30px, 4vw, 46px); line-height: 1.2; letter-spacing: -.035em; }
    .ea-content-stack .product-summary { margin: 20px 0 0; color: #58697F; font-size: 16px; line-height: 1.9; }
    .ea-content-stack .product-meta { display: flex; flex-wrap: wrap; gap: 10px 20px; margin: 24px 0 0; padding: 17px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
    .ea-content-stack .product-meta strong { color: #33465F; font-weight: 650; }
    .ea-content-stack .product-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
    .ea-content-stack .button-primary, .ea-content-stack .button-secondary { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 21px; border-radius: 9px; font-size: 14px; font-weight: 750; transition: transform .2s ease, background .2s ease; }
    .ea-content-stack .button-primary { color: #FFFFFF; background: var(--theme-color); }
    .ea-content-stack .button-primary:hover { transform: translateY(-2px); background: var(--theme-deep); }
    .ea-content-stack .button-secondary { color: var(--theme-color); background: var(--theme-soft); }
    .ea-content-stack .button-secondary:hover { transform: translateY(-2px); background: #DDE9F8; }
    .ea-content-stack .trust-note { margin: 18px 0 0; color: #7A8797; font-size: 12px; }
    .ea-content-stack .content-section { margin-top: 34px; padding: clamp(24px, 4vw, 44px); border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
    .ea-content-stack .section-heading { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 12px; margin-bottom: 24px; }
    .ea-content-stack .section-heading h2 { margin: 0; color: var(--ink); font-size: clamp(22px, 3vw, 29px); line-height: 1.3; }
    .ea-content-stack .section-heading p { margin: 0; color: var(--muted); font-size: 13px; }
    .ea-content-stack .product-body { min-width: 0; max-width: 100%; overflow-x: auto; color: #45566D; font-size: 15px; line-height: 1.95; overflow-wrap: anywhere; }
    .ea-content-stack .product-body img, .ea-content-stack .product-body video, .ea-content-stack .product-body iframe { max-width: 100%; }
    .ea-content-stack .product-body img { height: auto; }
    .ea-content-stack .product-body table { max-width: 100%; border-collapse: collapse; }
    .ea-content-stack .product-body th, .ea-content-stack .product-body td { padding: 10px 12px; border: 1px solid var(--line); }
    .ea-content-stack .related-section { margin-top: 44px; }
    .ea-content-stack .related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
    .ea-content-stack .related-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: #FFFFFF; transition: transform .2s ease, box-shadow .2s ease; }
    .ea-content-stack .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .ea-content-stack .related-image { display: grid; aspect-ratio: 16 / 10; place-items: center; overflow: hidden; background: #EDF2F8; }
    .ea-content-stack .related-image img { width: 100%; height: 100%; object-fit: cover; }
    .ea-content-stack .related-copy { padding: 17px; }
    .ea-content-stack .related-copy h3 { margin: 0; color: var(--ink); font-size: 16px; line-height: 1.5; }
    .ea-content-stack .related-copy p { display: -webkit-box; min-height: 3em; margin: 9px 0 12px; overflow: hidden; color: var(--muted); font-size: 13px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
    .ea-content-stack .related-more { color: var(--theme-color); font-size: 13px; font-weight: 700; }

    .footer { padding: 54px 0 20px; color: #D5DFEC; background: #10233D; }
    .footer-grid { display: grid; grid-template-columns: 1.45fr 1fr 1fr 1.1fr; gap: 34px; }
    .footer-brand { margin-bottom: 12px; color: #FFFFFF; font-size: 20px; font-weight: 750; }
    .footer-grid p { margin: 8px 0; color: #B8C5D6; font-size: 13px; line-height: 1.8; }
    .footer-grid h3 { margin: 0 0 13px; color: #FFFFFF; font-size: 14px; }
    .footer-grid a { display: block; width: fit-content; margin: 8px 0; color: #C4D0DF; font-size: 13px; }
    .footer-grid a:hover { color: #FFFFFF; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 18px; margin-top: 34px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.14); color: #9EADC1; font-size: 12px; }

    @media (max-width: 1080px) {
      .main-nav { display: none; }
      .hamburger { display: inline-block; }
      .header-inner { min-height: 70px; }
      .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 760px) {
      .container { width: min(100% - 30px, 600px); }
      .topbar .container { min-height: 35px; font-size: 11px; }
      .topbar-info { gap: 11px; }
      .topbar-info a:first-child { display: none; }
      .logo { font-size: 17px; }
      .logo img { width: 34px; height: 34px; }
      .member-btn { display: none; }
      .open-btn { min-height: 36px; padding: 0 11px; }
      .ea-content-stack { padding: 20px 0 58px; }
      .ea-content-stack .product-wrap { width: min(100% - 30px, 600px); }
      .ea-content-stack .product-overview { grid-template-columns: 1fr; gap: 24px; padding: 18px; border-radius: 16px; }
      .ea-content-stack .product-visual { min-height: 240px; padding: 18px; }
      .ea-content-stack .product-visual img { max-height: 290px; }
      .ea-content-stack .product-summary { margin-top: 14px; font-size: 15px; }
      .ea-content-stack .product-meta { margin-top: 18px; padding: 14px 0; }
      .ea-content-stack .product-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
      .ea-content-stack .button-primary, .ea-content-stack .button-secondary { min-height: 44px; padding: 0 10px; font-size: 13px; }
      .ea-content-stack .content-section { margin-top: 20px; padding: 22px 18px; }
      .ea-content-stack .related-section { margin-top: 30px; }
      .ea-content-stack .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
      .ea-content-stack .related-copy { padding: 12px; }
      .ea-content-stack .related-copy h3 { font-size: 14px; }
      .footer { padding-top: 38px; }
      .footer-grid { gap: 22px 16px; }
      .footer-bottom { flex-direction: column; gap: 5px; }
    }
    @media (max-width: 420px) {
      .header-btns { gap: 6px; }
      .open-btn { font-size: 12px; }
      .hamburger { width: 38px; height: 38px; }
      .ea-content-stack .related-grid { grid-template-columns: 1fr; }
      .ea-content-stack .product-actions { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }