@media (max-width: 1319px) {
  .section-padding {
    padding: 70px 0;
  }

  .hero-section {
    padding: 130px 0 60px;
  }

  /* Added breathing room for fixed navbar */
}

@media (max-width: 991px) {
  .hero-image {
    margin-top: 40px;
  }

  /* Body backdrop, scroll lock & blur overlay context */
  html:has(.navbar-collapse.show),
  body:has(.navbar-collapse.show) {
    overflow: hidden !important;
    height: 100vh !important;
  }

  /* Lift navbar container above backdrop so menu is 100% sharp and interactive */
  .navbar:has(.navbar-collapse.show) {
    z-index: 1045 !important;
  }

  body:has(.navbar-collapse.show)::after {
    content: '' !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(14, 43, 92, 0.45) !important;
    /* Soft premium dark blue blur overlay */
    backdrop-filter: blur(5px) !important;
    z-index: 1030 !important;
    animation: drawerBackdropFadeIn 0.35s ease forwards !important;
  }

  @keyframes drawerBackdropFadeIn {
    from {
      opacity: 0;
    }

    to {
      opacity: 1;
    }
  }

  /* Custom Hamburger Icon to X Morphing Transition - Synchronized & Balanced */
  .navbar-toggler {
    width: 42px !important;
    height: 42px !important;
    padding: 0 !important;
    border-radius: 10px !important;
    border: 1.5px solid rgba(14, 43, 92, 0.15) !important;
    background: transparent !important;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 1050 !important;
    position: relative !important;
  }

  .navbar-toggler:focus {
    box-shadow: none !important;
  }

  /* Crispy hamburger bars that exactly match high-fidelity specs */
  .navbar-toggler-icon {
    background-image: none !important;
    width: 22px !important;
    height: 2.5px !important;
    background-color: var(--navy-blue) !important;
    display: inline-block !important;
    position: relative !important;
    transition: background-color 0.2s ease !important;
  }

  .navbar-toggler-icon::before,
  .navbar-toggler-icon::after {
    content: '' !important;
    position: absolute !important;
    left: 0 !important;
    width: 100% !important;
    height: 2.5px !important;
    background-color: var(--navy-blue) !important;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease !important;
  }

  .navbar-toggler-icon::before {
    transform: translateY(-7px) !important;
  }

  .navbar-toggler-icon::after {
    transform: translateY(7px) !important;
  }

  /* Morph beautifully into a clear red 'X' when open */
  .navbar:has(.navbar-collapse.show) .navbar-toggler {
    border-color: var(--primary-red) !important;
    background-color: rgba(217, 4, 61, 0.06) !important;
  }

  .navbar:has(.navbar-collapse.show) .navbar-toggler .navbar-toggler-icon {
    background-color: transparent !important;
    /* Hide middle bar */
  }

  .navbar:has(.navbar-collapse.show) .navbar-toggler .navbar-toggler-icon::before {
    background-color: var(--primary-red) !important;
    transform: translateY(0) rotate(45deg) !important;
  }

  .navbar:has(.navbar-collapse.show) .navbar-toggler .navbar-toggler-icon::after {
    background-color: var(--primary-red) !important;
    transform: translateY(0) rotate(-45deg) !important;
  }

  /* Slide-in Vertical Drawer Navbar Panel from the Right */
  .navbar-collapse {
    position: fixed !important;
    top: 0 !important;
    right: -320px !important;
    width: 300px !important;
    height: 100vh !important;
    background: #fff !important;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15) !important;
    padding: 85px 24px 40px !important;
    margin: 0 !important;
    border-radius: 0 !important;
    z-index: 1040 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: flex-start !important;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
    overflow-y: auto !important;
  }

  .navbar-collapse.show {
    right: 0 !important;
  }

  /* Mobile Nav list items layout */
  .navbar-nav {
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 15px !important;
    margin-bottom: 25px !important;
  }

  .navbar-nav .nav-link {
    font-size: 16px !important;
    font-weight: 700 !important;
    color: var(--navy-blue) !important;
    padding: 8px 0 !important;
    border-radius: 0 !important;
  }

  .navbar-nav .nav-link:hover,
  .navbar-nav .nav-link.active {
    color: var(--primary-red) !important;
    background: transparent !important;
  }

  /* Inline beautiful expanding dropdown menus */
  .navbar-nav .dropdown-menu {
    position: static !important;
    float: none !important;
    background: rgba(14, 43, 92, 0.03) !important;
    border: none !important;
    box-shadow: none !important;
    padding: 10px !important;
    margin-top: 5px !important;
    border-radius: 12px !important;
  }

  /* Collapsed mobile header actions vertical stack */
  .navbar-collapse .d-flex {
    flex-direction: column !important;
    width: 100% !important;
    gap: 12px !important;
    margin-top: auto !important;
    /* Push buttons to the bottom of the drawer */
    align-items: stretch !important;
    padding-top: 20px;
    border-top: 1px dashed rgba(14, 43, 92, 0.1);
  }

  .navbar-collapse .d-flex .btn {
    width: 100% !important;
    justify-content: center;
    text-align: center;
    padding: 12px 20px !important;
  }

  /* Định vị lại sticker khuyến mãi trên máy tính bảng & mobile tránh tràn viền */
  .hero-promo-sticker {
    padding: 11px !important;
    left: 25% !important;
    width: 50%;
    bottom: -10%;
    top: unset !important;
    transform: none !important;
    box-shadow: 0 8px 25px rgba(217, 4, 61, 0.12) !important;
    animation: float-sticker-mobile 3s ease-in-out infinite !important;
  }

  @keyframes float-sticker-mobile {

    0%,
    100% {
      transform: translateY(0);
    }

    50% {
      transform: translateY(-4px);
    }
  }
}

@media (max-width: 767px) {
  .section-padding {
    padding: 50px 0;
  }

  .hero-section {
    padding: 110px 0 40px;
  }

  /* Added breathing room for fixed navbar on mobile */

  /* Global Row Gutter, Column Padding, and Container Optimization for Mobile */
  .container {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .row {
    --bs-gutter-x: 16px !important;
    --bs-gutter-y: 16px !important;
  }

  /* ================================================================ */
  /* SYNCHRONIZED TYPOGRAPHY SYSTEM FOR PERFECT MOBILE CONSISTENCY    */
  /* ================================================================ */
  h1,
  .hero-title,
  .display-5 {
    font-size: 2.05rem !important;
    font-weight: 800 !important;
    line-height: 1.25 !important;
  }

  h2,
  .section-title,
  .media-proof-headline {
    font-size: 1.6rem !important;
    /* Harmonized perfectly across all section headers! */
    font-weight: 800 !important;
    line-height: 1.3 !important;
  }

  h5,
  .step-card h5,
  .benefit-card h5,
  .cert-card h6,
  .product-name {
    font-size: 1.15rem !important;
    /* Harmonized perfectly across all card titles! */
    font-weight: 800 !important;
    line-height: 1.35 !important;
  }

  p,
  .section-subtitle,
  .product-desc,
  .step-card p,
  .benefit-card p,
  .cert-card p {
    font-size: 14.5px !important;
    /* Harmonized perfectly across all descriptive text! */
    line-height: 1.55 !important;
  }

  .section-subtitle {
    margin-bottom: 0 !important;
    /* Managed by .mb-5 container */
  }

  /* Global section gap reducer for mobile */
  .mb-5,
  .my-5 {
    margin-bottom: 24px !important;
  }

  /* Compact Ecosystem Step Cards with centered list margins */
  .step-card {
    padding: 30px 22px !important;
  }

  .service-points {
    padding: 12px !important;
    /* Neat centered alignment side-padding */
    margin: 12px 0 0 0 !important;
  }

  .service-points li {
    font-size: 13px !important;
    margin-bottom: 6px !important;
    line-height: 1.4 !important;
  }

  .step-icon-wrap {
    width: 54px !important;
    height: 54px !important;
    font-size: 22px !important;
    margin-bottom: 12px !important;
  }

  /* Compact 3-Column horizontal stats bar under Testimonials section */
  #testimonials .row {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-around !important;
    flex-wrap: nowrap !important;
    gap: 0 !important;
  }

  #testimonials .row>div {
    flex: 0 0 33.333% !important;
    max-width: 33.333% !important;
    padding: 0 4px !important;
  }

  .stat-block {
    padding: 8px 2px !important;
  }

  .stat-big-number {
    font-size: clamp(1.4rem, 4vw, 1.8rem) !important;
    margin-bottom: 4px !important;
  }

  .stat-big-label {
    font-size: 10.5px !important;
    line-height: 1.3 !important;
  }

  /* Compact 2x2 Grid for ISO/CE/IP67/Warranty Certifications with Equal Height Stretching */
  #certifications .row.g-4 {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 14px !important;
    margin-top: 24px;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  #certifications .col-lg-3.col-md-6 {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding-left: 0 !important;
    /* Overrides Bootstrap row > * padding to prevent squeezing */
    padding-right: 0 !important;
    margin-top: 0 !important;
    /* Grid gap handles vertical spacing */
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
  }

  .cert-card {
    padding: 9px 14px !important;
    /* Grand, plush and balanced mobile padding */
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
  }

  .cert-img-wrap {
    height: 110px !important;
    margin-bottom: 12px !important;
    padding: 6px !important;
    width: 100% !important;
  }

  .cert-card h6 {
    font-size: 13px !important;
    font-weight: 800 !important;
    margin-top: 0 !important;
    margin-bottom: 4px !important;
    line-height: 1.3 !important;
  }

  .cert-card p {
    font-size: 10.5px !important;
    line-height: 1.4 !important;
    margin-bottom: 10px !important;
    padding: 0 4px !important;
    /* Side padding to give description content massive visual space */
  }

  .cert-card div[class*="text-primary"],
  .cert-card .text-primary {
    margin-top: auto !important;
    /* Forces link alignment on bottom */
    padding-top: 6px !important;
    font-size: 11px !important;
  }

  /* Compact and balanced key feature cards */
  .benefit-card {
    padding: 26px 20px !important;
    /* Increased padding for grander appearance */
  }

  .benefit-card h5 {
    font-size: 1.12rem !important;
    margin-bottom: 6px !important;
  }

  .benefit-card p {
    font-size: 13.5px !important;
    line-height: 1.5 !important;
  }

  .icon-wrapper {
    width: 48px !important;
    height: 48px !important;
    border-radius: 12px !important;
    margin-bottom: 12px !important;
    font-size: 18px !important;
  }

  /* Balanced product card features sizing */
  .product-features span {
    font-size: 12px !important;
    padding: 3px 9px !important;
  }

  .step-item {
    margin-bottom: 30px;
  }

  /* Vertical Hero Buttons for premium tappable mobile UX */
  .hero-section .d-flex.flex-wrap {
    flex-direction: column !important;
    gap: 12px !important;
    width: 100%;
  }

  .hero-section .d-flex.flex-wrap .btn {
    width: 100% !important;
    justify-content: center;
  }

  .hero-trust {
    justify-content: center !important;
  }

  /* Clean 2-column grid layout for press logos on mobile */
  .media-logos-row {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 14px !important;
  }

  .media-logo-item {
    width: 100% !important;
    max-width: 100% !important;
    height: 56px !important;
    padding: 8px !important;
    border-radius: 12px !important;
    background: #fff !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03) !important;
    opacity: 0.9 !important;
  }

  .media-logo-img {
    max-height: 30px !important;
  }

  /* Vertical readable media quote stack */
  .media-trust-quote {
    flex-direction: column !important;
    text-align: center !important;
    gap: 8px !important;
  }

  .media-trust-quote .quote-link {
    margin-left: 0 !important;
    margin-top: 8px !important;
    width: fit-content;
    align-self: center;
  }

  /* Prevent massive visual height in Finder */
  .finder-phone-img {
    max-height: 280px !important;
    margin: 0 auto;
  }

  /* Accordion text squeeze prevention */
  .faq-accordion .accordion-button {
    font-size: 14.5px !important;
    padding: 15px 12px !important;
  }

  /* Product Finder Banner mobile adjustment */
  .finder-banner-section {
    padding: 60px 0;
    text-align: center;
  }

  .finder-banner-section .d-flex {
    justify-content: center;
  }

  .finder-banner-section .btn-light {
    width: 100%;
    justify-content: center;
  }

  /* Mobile Bottom CTA */
  .mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    padding: 15px;
    box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.1);
    z-index: 1050;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .mobile-cta .btn {
    width: 100%;
    margin: 0 5px;
  }

  .floating-contact {
    bottom: 15px !important;
    right: 12px !important;
    gap: 8px !important;
  }

  .btn-float {
    width: 45px !important;
    height: 45px !important;
    font-size: 19px !important;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12) !important;
    opacity: 0.85 !important;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) !important;
    /* Hiệu ứng bung lò xo cao cấp */
  }

  /* Nút trigger (+) luôn đậm nét trên mobile */
  .btn-float.float-trigger {
    opacity: 0.95 !important;
  }

  .floating-contact.active .btn-float:not(.float-trigger) {
    height: 45px !important;
    width: 45px !important;
    opacity: 0.85 !important;
    transform: scale(1) translateY(0) !important;
    pointer-events: auto !important;
    visibility: visible !important;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15) !important;
  }

  .btn-float svg {
    width: 22px !important;
    height: 22px !important;
  }

  .btn-float-img {
    width: 28px !important;
    height: 28px !important;
  }

  /* Thay vì ẩn cứng bằng display none, ta dùng ẩn mềm để có thể chạy hiệu ứng transition mượt mà */
  .floating-contact:not(.active) .btn-float:not(.float-trigger) {
    opacity: 0 !important;
    transform: scale(0.3) translateY(40px) !important;
    pointer-events: none !important;
    visibility: hidden !important;
    height: 0 !important;
    width: 0 !important;
    margin: 0 !important;
    box-shadow: none !important;
    transition-delay: 0s !important;
    /* Thu lại lập tức khi đóng */
  }

  .float-label {
    display: none !important;
    /* Hide hover labels on mobile touch screens */
  }

  /* Hide custom news navigation on mobile */
  .news-nav-btn {
    display: none !important;
  }

  /* Compact 2-Column footer layout for mobile */
  .footer .row {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 20px !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .footer .row>div:first-child {
    grid-column: span 2 !important;
    /* Full width for Logo & Giới thiệu */
    margin-bottom: 8px !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  .footer .row>div {
    width: 100% !important;
    max-width: 100% !important;
    margin-bottom: 0 !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
    /* Managed by grid gap */
  }

  /* Thu nhỏ icon dropdown (chevron) của accordion FAQ trên di động */
  #faqAccordion .accordion-button::after {
    width: 14px !important;
    height: 14px !important;
    background-size: 14px !important;
  }
  .btn-secondary{
    font-size: 16px !important;
  }
}

@media (max-width: 576px) {
  .hero-stat-card {
    display: none !important;
    /* Hide floating stat cards to prevent viewport overflow on narrow screens */
  }

  /* Padding tweak for very narrow viewports */
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  section#industries {
    padding-top: 0px;
  }

  .article-section {
    padding: 48px 0px;
  }

}