/* ── Nền cố định toàn trang web ── */
    html, body {
      min-height: 100%;
      overflow-x: hidden;
      max-width: 100%;
    }
    body {
      background-color: #f7faf6 !important;
      background-image: url('../../images/bg-site.png') !important;
      background-attachment: fixed !important;
      background-position: center center !important;
      background-repeat: no-repeat !important;
      background-size: cover !important;
    }
    #site-fixed-bg {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      width: 100%;
      height: 100vh;
      background: url('../../images/bg-site.png') no-repeat center center / cover;
      pointer-events: none;
      z-index: -1;
    }
    @media (max-width: 768px) {
      body {
        background-image: url('../../images/bg-site-mobile.png') !important;
      }
      #site-fixed-bg {
        background-image: url('../../images/bg-site-mobile.png') !important;
      }
    }
    /* Làm trong suốt các section sáng màu để lộ rõ ảnh nền */
    .section-about,
    #section_638246542,
    #section_1496302439,
    #section_599988950,
    #section_34156782,
    #section_999153863 {
      background: transparent !important;
    }

    
    @media (max-width: 768px) {
      #header .header-bottom {
        display: none !important;
      }
      #header .header-main {
        height: 70px !important;
        min-height: 70px !important;
      }
      #wrapper {
        padding-top: 70px !important;
      }
      #header.sticky-on .header-main {
        height: 70px !important;
        background: #ffffff !important;
        border: none !important;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05) !important;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08) !important;
      }
    }
    #header.sticky-on .header-bottom {
      background: #ffffff !important;
      border: none !important;
      border-bottom: none !important;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06) !important;
      min-height: 52px !important;
    }
    #header.sticky-on .header-bottom .nav-inner {
      height: 52px !important;
    }
    #header.sticky-on .nav-menu > li > a {
      line-height: 52px !important;
      color: #2b2b2b !important;
    }
    #header.sticky-on .nav-menu > li > a:hover,
    #header.sticky-on .nav-menu > li.active > a {
      color: var(--primary) !important;
    }
    #header.sticky-on .nav-menu > li {
      border: none !important;
    }
    #header.sticky-on .nav-menu > li:first-child {
      border: none !important;
    }

    /* ── Banner responsive: Đảm bảo Desktop giữ nguyên tuyệt đối, Mobile tối ưu 100% ── */
    @media (min-width: 850px) {
      #banner-1605133104 { padding-top: 40%; }
      #banner-1605133104 svg { height: 80px !important; }
      #text-box-199120496 > div { width: auto !important; max-width: 60% !important; }
      #text-box-199120496 h4 { font-size: 22px !important; }
      #text-box-199120496 h2 {
        font-size: clamp(54px, 4.8vw, 76px) !important;
        line-height: 1.1 !important;
      }
      #text-box-199120496 a { font-size: 16px !important; }
    }
    @media (max-width: 849px) {
      #banner-1605133104 {
        padding-top: 380px !important;
        min-height: 380px;
      }
      #banner-1605133104 svg {
        height: 45px !important;
      }
      #text-box-199120496 {
        justify-content: center !important;
        align-items: center !important;
        padding-top: 0 !important;
        padding: 0 15px !important;
      }
      #text-box-199120496 > div {
        width: 100% !important;
        max-width: 100% !important;
        text-align: center !important;
        padding: 0 15px !important;
        margin-left: auto;
        margin-right: auto;
      }
      #text-box-199120496 h4,
      #text-box-199120496 h2,
      #text-box-199120496 div {
        text-align: center !important;
      }
      #text-box-199120496 h4 {
        font-size: 14px !important;
        letter-spacing: 0.1em !important;
        margin-bottom: 8px !important;
      }
      #text-box-199120496 h2 {
        font-size: clamp(24px, 6.5vw, 32px) !important;
        line-height: 1.2 !important;
        margin-bottom: 14px !important;
      }
      #text-box-199120496 .green-highlight-bar {
        height: 6px !important;
        bottom: 4px !important;
      }
      #text-box-199120496 a {
        display: inline-block !important;
        font-size: 14px !important;
      }
    }